SQLite is a lightweight and embeddable database. It's fully ACID and SQL92 compliant with 100% test coverage. As storage a single cross-platform disk file format is used, which may be up to terrabytes in size. It requires no setup and little administrative work. SQLite itself has a simple yet expandable API. Bindings for most programming languages exist on all major plattforms.
Gradle is an open-source build automation tool focused on flexibility and performance. Gradle build scripts are written using a Groovy or Kotlin DSL.
ImageMagick® is software toolset and library to create, edit, compose, or convert bitmap images. It supports easy cropping, resizing and distorting, combining and morphing, colorizations, animations, applying effects or decorations, adding text, polygons and Bézier curves. Supported image formats include PNG, JPEG, JPEG-2000, GIF, SVG, TIFF, DPX, EXR, PDF and Postscript. IM is comprised of the command line tools convert, identify, mogrify, composite, montage, compare, stream, display (with edi
libUseful is a general 'C' library providing useful functions related to: resizable strings, lists and maps, unix and tcp sockets, SSL/TLS, cryptographic hashes, parsing of json, yaml and other markup languages, terminal output including ANSI/vt100 escape sequences, OAuth 2.0, etc, etc.
libzip is a C library for reading, creating, and modifying zip archives. Files can be added from data buffers, files, or compressed data copied directly from other zip archives. Changes made without closing the archive can be reverted. The API is documented by man pages. It includes a tool to modify zip archives from the command line.
VIPS is a small, quick and memory-conservative 2D image processing C and C++ library. It comes with over 300 functions, for arithmetic processing, histograms, convolutions, morphological operations, frequency filtering, colouring, resampling, statistics and others. It supports most common raster image formats (PNG, TIFF, JPEG, FITS, OpenEXR), or chain to ImageMagick/GraphicsMagick.
Duplicity is a bandwidth-efficient backup system with built-in encryption. It produces incremental tar volumes and stores them onto local or remote servers using librsync. It utilizes GnuPG for encryption and signing.
Julia is a high-level, dynamic, and JIT-compiled programming language for technical computing. It integrates distributed multiple-dispatch parallel execution, a mathemetical function library, numerical accuraccy, libraries for linear algebra, signal processing, Unicode-aware string processing, Lisp-like macros, Python code bondings, C function wrapping, user-defined and dynamic typing.
Wine is an implementation of the Windows API on top of X and Unix. It does not require Microsoft Windows, but can use native Windows DLLs if they are available. It provides both a development toolkit for porting Windows source code to Unix as well as a program loader, allowing many unmodified Windows programs to run on x86-based Unixes.
KDevelop is a cross-platform IDE. It supports various programming languages such as C, C++, Python, PHP, Java, SQL, Ruby, QML, JavaScript, Go, and document formats XML, HTML, CSS, build systems QMake, CMake, and version control, GUI builders, debugging and documentation tools. It's based on KDevPlatform and the KDE and Qt libraries.
Qsynth is a fluidsynth GUI front-end application written in C++ around the Qt framework using Qt Designer. Eventually it may evolve into a softsynth management application allowing the user to control and manage a variety of command line softsynth but for the moment it wraps the excellent FluidSynth. FluidSynth is a command line software synthesiser based on the Soundfont specification. Qsynth is free, open-source software, distributed under the terms of the GNU General Public License (GPL) ver
GraphicsMagick is the swiss army knife of image processing. Comprised of 267K physical lines (according to David A. Wheeler's SLOCCount) of source code in the base package (or 1,225K including 3rd party libraries) it provides a robust and efficient collection of tools and libraries which support reading, writing, and manipulating an image in over 89 major formats including important formats like DPX, GIF, JPEG, JPEG-2000, PNG, PDF, PNM, TIFF, and WebP. Image processing is multi-threaded using O
SDL_bgi is a graphics library based on SDL2. SDL_bgi is nearly fully compatible with BGI (graphics.h), the Borland Graphics Interface that was the de-facto standard in PC graphics back in DOS days. It's very easy to use, pretty fast, and it also provides extensions for ARGB colours, mouse support, and turtle graphics. It should run on any platform supported by SDL2.
The Embedthis GoAhead™ web server is one of the world’s most popular embedded web server deployed for over 15 years in hundreds of millions of devices by industry leaders and startups. It is compact and requires less than 150K RAM. GoAhead uses an event-driven, non-blocking core to efficiently operate with minimal resources. Coupled with a role-based authentication framework and security sandbox, GoAhead is highly secure. It is easily embedded and ported to create secure web applications.
VirtualBox is a full x86 hardware virtualizer, suitable for server, desktop and embedded usage. It's extremely feature-rich, emulates lots of individual and alternative hardware and devices, supports different virtual machine disk formats, it's cross-platform and supports ancient and current Windows versions, DOS systems, BSD, Solaris and OS/2 as guest operating system.
bigz is a simple but feature-rich C library for bignum calculations. It's the continuation of an old BigNum project originally begun as a research project. Current releases include many fixes, extensions and improvements. It's not as efficient as GMP, but comes with a smaller footprint, provides Z+Q infinite precision, and is rather portable and multi-thread safe.
Git is a distributed version control system, originally designed for Linux kernel development and large projects with non-linear workflows. It's comprised of individual tools, reuses ssh and rsync protocols, emphasises speed and data integrity, and keeps every checkout as full-fledged repository, and cryptographically authenticates source history. Various graphical frontends, IDE integrations and web services (GitHub) exist; with its git-fast-export format meanwhile serves interoperability with
GNU LibreDWG is a free C library to handle DWG files. It aims to be a free replacement for the OpenDWG libraries. DWG is the native file format of AutoCAD. GNU LibreDWG is based on LibDWG, originally written by Felipe Castro.
Firejail is a security sandbox tool, which utilizes Linux 3.x namespaces to setup restricted environments for untrusted applications. It works for console and graphical applications, servers, or even login sessions; by assigning them and their subprocesses a private view of globally shared kernel resources. Firejail isolates mount points, adds chrooting, filesystem writability or overlays, sandbox filesystem sharing, networking stack and firewall isolation, constrains interprocess communication,
HomeBank helps managing your personal accounting. It's designed for ease of use, and quickly analyzing and tracking your personal finances in detail, has filtering tools and pretty graphing. It can import from Quicken, MS Money, bank statements as OFX, QIF, CSV and QFX. HomeBank also detects duplicate transactions, auto-numbers cheques, handles bank, cash, asset, credit and liability account types, can schedule transactions, internel transfers, and so forth.
OpenWRT is a Linux distribution for wireless routers and low-resource embedded devices. It provides a coherent base system for different plattforms, various hardware and firmware drivers, and a Debian-style packaging system for application and add-on packages. The JSON-RPC based admin web interface LuCI makes configuration very user-friendly, but keeps the similar SSH and command line UCI interface and /etc files accessible. With its own PROCD system event daemon it can immediately respond to up
A hierarchical note taking application, featuring rich text and syntax highlighting, storing data in a single xml or sqlite file. Features: rich text formatting and colorization, syntax highlighting, images handling, embedded files, lists handling, simple tables, codeboxes, text/image/table alignment, hyperlinks, spell checking, cross application copy/paste, export to html or plain text, table-of-contents generation, extensive search function. It can import from Basket, Cherrytree, Epim html, G
Scid vs. PC is a continuation of Shane's Chess Information Database, which provides a chess toolkit, move database, analysis tools, various chess AI engine bindings or to online servers. It remains database-compatible but adds many usability and feature enhancements, such as a tournament game mode, an overhauled GUI, new gamelists, rating graphs, other analysis engines, and drag and drop support on all platforms.
uftpd is a small FTP/TFTP server. No configuration files, no hassle, it just works!
HandBrake is a video file conversion tool. It supports nearly all formats, can transcode media files and codecs for various platforms, players and devices (includes a user-friendly target list to select from). It has an uncomplicated interface and is available cross-platform.
GEGL (Generic Graphics Library) is a data flow based image processing framework, providing floating point processing and non-destructive image processing capabilities to GNU Image Manipulation Program and other projects (imgflo, GNOME Photos, gcut, iconographer, …) With GEGL you chain together processing operations to represent the desired image processing pipeline. GEGL provides operations for image loading and storing, color adjustments, GIMPs artistic filters and more forms of image processi
uGet is a powerful cross-platform download manager. It allows to queue and schedule downloads, categorize them, resume interrupted file downloads, implictly start retrieving URLs from the clipboard, batch processing, use various protocols (HTTP, FTP, Torrent). uGet utilizes multiple connection channels/sockets for speedup, has keyboard shortcuts, a quiet and a CLI mode, allows automatic system shutdown after completion, provides a history, Aria2 and Firefox / Chrome plugins, and an Android versi
FFmpeg is the leading framework for decoding, encoding, transcoding, muxing, demuxing, streaming, filtering and playing pretty much any media format. It supports widespread and standardized, proprietary and fringe file formats and encodings. It's comprised of the ffmpeg, ffserver, ffplay and ffprobe utilities. But also provides libavcodec, libavutil, libavformat, libavfilter, libavdevice, libswscale and libswresample for application use. Its primary development attention is on security.
GnuCash is a personal finance and small-business accounting software. It provides a check-book like register GUI to enter and track bank accounts, stocks, income and expenses, for double-entry accounting. It also allows to manage stock/bond/mutual fund accounts, generate graphs and reports, supports QIF/OFX/HBCI import, and transaction matching, common calculations and scheduling. It's still simple to use.
tesseract-ocr is an OCR engine originally developed by Hewlett Packard and now sponsored by Google. It is highly accurate and will read a binary, gray, or color image and output text.
FileZilla is a feature-rich FTP, FTPS and SSH FTP client, with support for all major plattforms. All tools are designed to aid moving and synchronizing files between local and remote file or webservers. It even allows multi-target uploading or editing files in-place. FileZilla also sports IPv6, a tabbed interface, resuming up and downloads, transfer speed limits, large files over 4GB, server and bookmark management, drag and drop, filtering, HTTPS / SOCKS5 / FTP proxying, and remote file searchi
GNU nano is a console text editor, modelled after Pico. It is very newcomer-friendly due to on-screen menus with always visible keyboard shortcuts. Keybindings are configurable, and full undo and redo actions are supported. Nano even can be used as STDIN pager, and it provides fast syntax highlighting, even for regexps.
di is a disk information utility that displays everything that df does and more. It features the ability to display your disk usage in whatever format you prefer. It also checks the user and group quotas, so that the user sees the space available for their use, not the system wide disk space. It is designed to be highly portable across many platforms and is great for heterogenous networks.
Cppcheck is a static analysis tool for C/C++ code. It doesn't look for syntax errors, but for bugs that a compilation steps would not normally detected. It provides out of bounds checking, checking the code for each class, exception safety, memory leaks checking, warnings for obsolete function usage, invalid usage of STL, and tests for uninitialized variables and unused functions. There are IDE and VCS bindings for Code::Block, CodeLite, Eclipse, gedit, Hudson, Jenkins, Mercurial, Tortoise SVN,
A planetarium software that renders a 3D simulation of the night sky. * default catalogue of over 600,000 stars * extra catalogues with more than 177 million stars * default catalogue of over 80,000 deep-sky objects * extra catalogue with more than 1 million deep-sky objects * asterisms and illustrations of the constellations * constellations for 20+ different cultures * images of nebulae (full Messier catalogue) * realistic Milky Way * very realistic atmosphere, sunrise and sunset * the plane
darktable is an open source photography workflow application and RAW developer. A virtual lighttable and darkroom for photographers. It manages your digital negatives in a database, lets you view them through a zoomable lighttable and enables you to develop raw images and enhance them.
FLoM is a tool for synchronizing shell commands and avoiding complex workarounds. It manages process serialization not unlike "nice" handles their prioritization. It allows shell commands to be serialized and synchronized within a single system or a network. It requires little configuration to easily handle common settings.
Micro GNU Emacs-like text editor for UNIX
Hashrat is a command-line utility that hashes things using md5, sha1/256/512, whirlpool and jh hash algorithms. It's written in C with few dependancies (basically just the standard C library). It can read input from standard in and hash it, either as a complete file, or line-by-line. It can recursively hash files on disk, either outputing hashes to stdout, or storing them in filesystem attributes, or in a memcached server. It can check files against a list of hashes supplied on stdin, or in t
Full color painting software for Linux for illustration drawing. This is not suitable for dot editing. Since the color is handled with 16 bit color (15 bit fixed point number) internally, the accuracy of color rises, but the memory is consumed correspondingly.
GIMP is a very versatile graphics editing software. It works on bitmap images, provides layered editing, a plethora of drawing and colorization tools, photo enhancing and retouching features and filters, programmatic effects, various extension and scripting capabilities, and itself provides a highly adaptable multi-window interface. It can open nearly any graphics format, or import Photoshop, PDF, Postscript, SVG and other vector formats even.
CloudI is an open-source private cloud computing framework for efficient, secure, and internal data processing. CloudI provides scaling for previously unscalable source code with efficient fault-tolerant execution of C/C++, Erlang/Elixir, Go, Haskell, Java, JavaScript/node.js, OCaml, Perl, PHP, Python and Ruby services. The bare essentials for efficient fault-tolerant processing on a cloud!
strace is a diagnostic, debugging and instructional userspace utility for Linux. It is used to monitor and tamper with interactions between processes and the Linux kernel, which include system calls, signal deliveries, and changes of process state. The operation of strace is made possible by the kernel feature known as ptrace.
XHP is Facebooks extension to utilize XML fragments and structures directly within PHP source code. Which allows simpler document construction, processing, and sane variable interpolation without having to use DOM functions. It also permits to declare custom :xml:object classes for even quicker templating. Previous versions are available for Zend/PHP5.
mlterm provides a X11 terminal emulator with extensive support for internationalization, different character sets and encodings, or input methods. Fonts are rendered anti-aliased through FreeType, one instance can manage multiple windows, it has a scrollbar API, mouse wheel support, automatic encoding detection, and a daemon mode. Binaries for Windows and Java are also available.
PCRE is a widely used Unicode-compatible regular expression engine. It implements Perl5 regex syntax and semantics, some Python, .NET and Onigurama extensions. It uses just-in-time compilation, has consistent escaping rules, and allows for recursion, assertions and conditional patterns or complex subroutines and callouts, thus goes far beyond classic regular expressions.
Embedthis Appweb is a fast, little embedded Web server. It is unmatched in efficiency and serves pages at native speed, using an event-driven, non-blocking core to serve multiple requests using minimal resources. It has integrated caching and the ESP "C" Web framework. Without compromising performance, it has extensive security controls and a rigorous security sandbox that helps protect the server and mitigate denial-of-service attacks. It is one of the most widely deployed embedded Web servers
Rspamd is an advanced spam filtering system featuring support for various internal and external filters such as regular expressions, suffix tries, RBLs, URL black lists, IP lists, SPF, DKIM, character maps, advanced statistics module (based on OSB-Bayes algorithm) and fuzzy hashes database that is generated based on honeypots traffic. Rspamd is designed to process hundreds of messages per second simultaneously without significant CPU load.
Mercurial is a free, distributed source control management tool. It's lightweight and efficiently handles projects of any size with an easy and intuitive interface.
Npgsql is a .NET data provider for Postgresql 9.0 and later. It's implemented completely in C# 3.0 and thus does not require a client library. Allows complete database querying and CRUD interaction, has some support for ADO.NET 2.0, provides logging support, allows :colon or @prefix parameter binding, and native large object support.
Courier is a mail transfer agent (MTA) and groupware server. It implements IMAP, ESMTP, POP3, LDAP, SSL, HTTP, iCal. It also provides mailing list management, filtering, maildirs storage, and a webmail interface with calendaring and scheduling.
Gwyddion is a modular SPM (Scanning Probe Microsope) data visualization and analysis tool. It can be used for all most frequently used data processing operations including: leveling, false color plotting, shading, filtering, denoising, data editing, integral transforms, grain analysis, profile extraction, fractal analysis, and many more. The program is primarily focused on SPM data analysis (e.g. data obtained from AFM, STM, NSOM, and similar microscopes). However, it can also be used for analyz
wxEphe displays Astronomical Ephemeris for The Sun, The Moon, and solar system planets, given date and observer's location.
CAWT is a TWAPI-based TCL utility package to interact with COM interfaces on Windows systems. It provides specialised bindings for Word, Excel, PowerPoint, MSIE, Outlook, Matlab, and Google Earth.
HarfBuzz is a text shaping engine. It primarily supports OpenType, but also Apple Advanced Typography. HarfBuzz is used in Android, Chrome, ChromeOS, Firefox, GNOME, GTK+, KDE, LibreOffice, OpenJDK, PlayStation, Qt, XeTeX, and other places.
mergerfs is a union filesystem for FUSE. It allows to join multiple source directories, declare priority mappings for file operations, to provide a joined view to the underlying files. It's similar to mhddfs, unionfs, and aufs; but allows for accessing standard and extended attributes.
CMOC is a 6809-generating cross-compiler for a subset of the C language. It produces executables for the Motorola 6809 processor for the Color Computer .BIN format, the OS-9 format and for the Vectrex game console. It runs under GNU/Linux and other Unix-like environments.
OpenSSH is a BSD/Linux implementation of SSH1 and SSH2 for encrypted terminal connections, tunneling and file transfers. It includes the sshd server, scp and sftp, and various utility tools such as ssh-add, ssh-agent, ssh-keysign, ssh-keyscan, ssh-keygen, and the sftp-server.
Evince is a document viewer for multiple document formats. The goal of evince is to replace the multiple document viewers that exist on the GNOME Desktop with a single simple application. Evince is specifically designed to support the file following formats: PDF, Postscript, djvu, tiff, dvi, XPS, SyncTex support with gedit, comics books (cbr,cbz,cb7 and cbt). For a comprehensive list of formats supported, see Supported Document Formats.
Fossil is a distributed version control system, quite robust and easy to use. It manages local and remote repositories, user permissions, has a built-in wiki, bugtracker, release blog and an extendable web interface. It's github-in-a-box as all features are packed into a stand-alone executable which also doubles as server. Internally the database utilizes SQLite and allows extending that or its user interface through TCL or the builtin TH1 scripting language. An optional JSON API permits further
Libvorbis is the reference implementation for the Ogg Vorbis audio file and compression format from Xiph. It provides high fidelity encoding even at low compression ratios, and is widely used by open source and commercial applications.
"ne" is a tiny programming editor for the terminal. It compiles and runs on any POSIX platform, provides standard keystrokes, and a very easy-to-use menu interface. ne has full UTF-8 support, syntax highlighting, a built-in scripting language for extensibility, unlimited undo/redo, autocompletion, and binary editing capabilities, and can work with rather large files even.
email2trac is a utility that converts email messages to Trac tickets. It features HTML message conversion, attachments, updating of tickets via email, command line options, a configuration file, Unicode support, spam detection, workflow support, and support for FullBlogPlugin and DiscussionPlugin.
dte is a small and easy to use console text editor. Colors and bindings can be fully customized to your liking. It has some features useful to programmers, like ctags support and it can parse compiler errors, but it does not aim to become an IDE.
The Ham Radio Control Library–Hamlib, for short–is a project to provide programs with a consistent Application Programming Interface (API) for controlling the myriad of radios and rotators available to amateur radio and communications users.
Expat is a stream-oriented XML parser library written in C. It excels with files too large to fit RAM, and where performance and flexibility are crucial. There are a number of applications, libraries and hardware using Expat, as well as bindings and 3rd-party wrappers. Expat is packaged everywhere.
The aim of the project is to provide a fully non-destructive photo retouching program with a complete workflow including RAW image development. Here is the general feature (wish)list: Fully non-destructive, layer-based photo editing workflow with realtime preview of the final image Support for 8-bits and 16-bits integer as well as 32-bits and 64-bits floating point precision, selectable at runtime and on a per-image basis Allows to load and edit images of arbitrary size, thanks to the underlyi
dos2unix is a classic command line tool to convert between the different linebreak types of CRLF on DOS/Windows, plain LF on Unix systems, and CR on Mac systems.
Gambas is an IDE and BASIC interpreter with object-oriented extensions. It's designed to ease building graphical applications programs using Gtk+ or Qt, and runs on most Unix and Linux systems. With its runtime standalone applications can be packaged, even command-line programs. The Gambas3 JIT-compiling interpreter often executes faster than Perl or Python apps. It also supports SDL, OpenGL and OpenAL, MySQL or PostgreSQL databases, CGI webserver interfacing,
Webfwlog is a Web-based firewall log reporting and analysis tool. It supports IPv6, as well as geoip data for ips using maxmind's geoip databases. It allows users to design reports to use on logged firewall data in whatever configuration they desire. Included are sample reports as a starting point. Reports can be sorted with a single click, or "drilled-down" all the way to the packet level, and report definitions saved for later use. Supported log formats are netfilter, ipfilter, ipfw, ipchains,
GDB is a source-level debugger for Ada, C, C++, Objective-C, Pascal and many other compiled languages. It can debug running processes on more than a dozen different processor architectures. It's itself ported to most BSD/ and GNU/Linux, Unix and Microsoft Windows systems.
A lightweight GUI framework for embedded displays Design your GUI with a drag & drop builder, then apply the same code to a wide range of displays, libraries and controllers with the cross-platform Arduino framework supporting Windows, OS X and LINUX. Open source MIT license. Features: - Pure C library, no dynamic memory allocation - Widgets: text, images, buttons, checkboxes, radio buttons, sliders, keypad, listbox, radial controls, scrolling textbox / terminal, graphs, etc. plus extensions a
LiVES is a video editing system, which provides realtime editing and mixing, can apply realtime rendering effects, or just perform format conversions. It's suitable both for newcomers and VJs, available cross-platform, runs even on low-end hardware, and is extensible per RFX plugins.
Fldigi is a digital modem application for common amateur radio systems. It supports CW, PSK, MFSK, RTTY, Hell, DominoEX, Olivia, and Throb. It also helps calibrating a sound card to a time signal and perform frequency measurement tests. Flmsg is a messaging tool over digital radio, while Flarq supports ARQ file transfers.
MuPDF is a slim PDF and XPS viewer. It renders both in high-quality with anti-aliased fornts, accurate metrics and spacing. It fully understands PDF 1.7 with hyperlinks, annotations, transparency, forms, transitions, javascript and encryption. And supports both XPS and OpenXPS formats.
MikroLock reads and writes encrypted miniLock files. It is a fast native implementation of the open minilock file format. Despite its name (and in contrast to the original implementation), it can also handle big files. Information about the cryptographic details: https://minilock.io.
The package-update-indicator utility regularly checks for software updates and notifies the user about available updates using desktop notifications and either a status notifier icon or a system tray icon.
libfaketime intercepts various system calls that programs use to retrieve the current date and time. It then reports modified (faked) dates and times (as specified by the user) to these programs. This means you can modify the system time a program sees without having to change the time system-wide.
File Service Protocol is a lightweight UDP-based file transfer system. It has many benefits over plain FTP, such as anonymity for transfers and archives. It's less bandwidth intensive but still fault tolerant.
sencrypt and sdecrypt are utilities for encrypting and decrypting data with the AES, DES, 3DES, and RC4 algorithms. It can read keys from files or ask for a passphrase and use that together with a salt to derive a key using the PBKDF2 key derivation function. sencrypt and sdecrypt are portable and compatible reimplementations of the encrypt and decrypt utilities in Solaris/Illumos-based operating systems.
rmw (ReMove to Waste) is a safe-remove utility for the command line. Its goal is to conform to the FreeDesktop.org Trash specification and therefore be compatible with KDE, GNOME, XFCE, and others. Desktop integration is optional however, and by default, rmw will only use a waste folder separated from your desktop trash. One of its unique features is the ability to purge files from your Waste/Trash directories after x number of days.
Xfdesktop manages the root window for the XFCE4 desktop environment. It basically displays the background, shows desktop icons, implements the virtual desktop switching, and the root context and application menu.
Nmap ("Network Mapper") is a network utility for service discovery, monitoring and security auditing. Nmap utilizes raw IP packets for host discovery, port scanning, OS fingerprinting, firewall probing, and generating various statistics. It permits inspecting large network ranges but also works for single server checks. It's cross-platform compatible and also provides a X11 reporting GUI with Zenmap, and Ncat for data transfer and debugging, Ndiff for result comparison, and Nping for response an
LLVM is a modular and reusable compiler toolchain. It's suitable for static and dynamic compilations of various programming languages, and based on its own target-abstracted intermediate code representation. Clang is its native C, C++ and Objective-C compiler, which provides additional static code analyzers. Dragonegg is a GNU CC parser binding. LLDB is an extensive debugger utilizing LLVMs JIT compiler, syntax tree or expression parser. lld a newly developed dynamic linker. And vmkit an impleme
Fink is a package management system for Mac OS X and Darwin systems. It utilizes Debians apt and dpkg tools, while "fink" itself is the source to package building system. The project also adapts sources for broader compatibility with Mac/Darwin systems.
Perl is a family of high-level, general-purpose, and dynamically interpreted programming languages. It borrows some syntax from C, Unix Shells, and AWK or SED, and more or less reinvented modern regular expressions. Perl 5 is the current mainstream version, with over 20 years of development. CPAN provides a modular packaging system, and allows Perl to be used for web applications, graphics programming, networking, system adminstration, and many sciency applications.
Simple program to control backlight brightness of laptops in Linux. Useful for users of Awesome, i3, or other window managers that do not have native support.
DHEX is a more than just another hex editor: It includes a diff mode, which can be used to easily and conveniently compare two binary files. Since it is based on ncurses and is themeable, it can run on any number of systems and scenarios. With its utilization of search logs, it is possible to track changes in different iterations of files easily.
Calf Studio Gear is a stack of audio effect plugins for JACK sound servers and LV2 hooks. It contains instruments and tone generators, dynamic processors, digital effects, modulators, filters and equalizers, delay effects, distortion and enhancement filters, as well as some tools aimed at professionals.
FreeType is a freely available software library to render fonts. It is written in C, designed to be small, efficient, highly customizable, and portable while capable of producing high-quality output (glyph images) of most vector and bitmap font formats.
Elm Millennium Edition 2.5 (or Elm ME+ 2.5) is based on Elm 2.4 and incorporates some code from Elm 2.5. It contains enhanced MIME and character set support. A subset of UTF-8 (Unicode) is handled. It can read mail from a local mbox and POP or IMAP folders and can pass mail to the PGP or GPG programs. It can also view digests as a mailbox and reassemble fragmented (message/partial) messages. It includes modules for TLS/SSL, iconv, resolv, and SMTP.
Zenroom is a brand new, small and portable virtual machine for cryptographic operations. The Zenroom VM has no external dependencies, is smaller than 2MB, runs in even less memory and is ready for experimental use on many target platforms: desktop, embedded, mobile, cloud and browsers (webassembly). The goal of this project is that of improving people's awareness of how their data is processed by algorithms, as well facilitate the work of developers to create along privacy by design principles
yuck is a command line option parser for C that works on a minimal set of dependencies---only a C compiler and the m4 macro processor are required. It supports all the standard use cases: GNU-style long options (--option), condensable short options (-xab for -x -a -b), and optional arguments to long and short options (--foo[=BAR]), multiple occurrence of options (-vvv). Most importantly, it does not depend on libc's getopt() nor getopt_long().
ivykis is a library for asynchronous I/O readiness notification. It is a thin, portable wrapper around OS-provided mechanisms such as /dev/poll, epoll_create(2), kqueue(2), poll(2), and port_create(3C). ivykis was mainly designed for building high-performance network servers, but can be used as building block for any kind of event-driven application that uses poll(2)able file descriptors as its inputs.
SLEEF implements vectorized versions of all C99 real floating point math functions. It can utilize SIMD instructions of modern processors. SLEEF is designed to fully utilize SIMD computation by reducing the use of conditional branches and scatter/gather memory access. Our benchmarks show that the performance of SLEEF is comparable to that of the best commercial library.
libpng is the PNG image format reference implementation. Portable Network Graphics are the most widely used raster image format, patent-free, based on lossless data compression, support indexed/paletted, grayscale, and 24 or 32 bit truecolor images with transparency. It's also an highly extensible container format, with built-in color profiles and representation information, textual meta data, filters, progressive interlacing, and permits animations in the derived APNG or MNG formats.
The stunnel program works as SSL encryption wrapper between remote and local network sockets or inetd-started daemons. It adds SSL or TLS functionality to any network service, commonly POP3, IMAP or HTTP servers. Stunnel uses OpenSSL for cryptography. It can itself function as port redirection deamon, or as temporary traffic interceptor, and requires no adaption of the shadowed programs.
Cmark is a CommonMark (derived from MarkDown) reference implementation in C. (An implementation in JavaScript is also available). It provides parsing and HTML or XML transformation. An intermediate AST representation of documents can also be augmented. On performance it's on par with sundown. There's a C99 compliant libcmark and a command-line cmark tool included.
GNU wget is a HTTP and FTP downloading and mirroring tool for the command line. It provides various options and complete HTTP support. It supports REST and RANGE requests for partial and continuous downloads, can use wildcards for mirroring complete websites, converting HTML references to relative links, use HTTP cookies, proxies, persistent connections, background processing, and can compare files prior downloading.
Powerful terminal utility that allows you to use words coming from the standard input to create a nice selection window just below the cursor. Once done, your selection will be sent to standard output.