lshw (HardWare LiSter) is a small tool for Linux to provide detailed information on the hardware configuration of the machine. It can report exact memory configuration, firmware version, mainboard configuration, CPU version and speed, cache configuration, bus speed, etc.
This tool provides a basic, RFC-compliant LDAP server to serve locally-defined user and groups (i.e. in /etc/passwd and /etc/group). By using directoryd, one can turn a vanilla UNIX/Linux server into a central identity repository for other UNIX/Linux servers, macOS machines, ownCloud/Nextcloud, Gitea, Zabbix, nearly any LDAP-aware solution...
Pukcab is a lightweight, single-binary backup system that stores de-duplicated, compressed and incremental backups on a remote server using just an SSH connection.