CUPS (Common Unix Printing System) is a modular printing system. It's based on the Internet Printing Protocol and supports PostScript or PDF and various raster printers. The spooler and drivers can deliver jobs remotely via IPP, LPD, SMB, and locally to USB, SCSI, Firewire, WiFi, serial, or parallel devices. With an extensive filter system it supports a wide range of input formats and printer targets. It's usable with BSD, Linux, MacOSX, Solaris and Windows servers.
major feature: The focus of this major release is on performance and security improvements. The scheduler did not preserve listener sockets from launchd or systemd after a restart. Added some USB quirk rules for the libusb-based USB backend. Spanish localization update. Updated documentation for 2.0.0 release.