command-not-found.com
Convert text files to PostScript, HTML, RTF, ANSI, and overstrikes. More information: <https://www.gnu.org/software/enscript>.
PDF merging utility. More information: <https://github.com/mtgrosser/pdfunite>.
Compare two files byte by byte. More information: <https://www.gnu.org/software/diffutils/manual/html_node/Invoking-cmp.html>.
Display simple help pages for command-line tools from the tldr-pages project. Note: the --language and --list options are not required by the client specification, but most clients implement them. More information: <https://github.com/tldr-pages/tldr/blob/main/CLIENT-SPECIFICATION.md#command-line-interface>.
The PulseAudio sound system daemon and manager. More information: <https://www.freedesktop.org/wiki/Software/PulseAudio/>.
Email IMAP tool for syncing, copying and migrating email mailboxes between two IMAP servers, one way, and without duplicates. More information: <https://imapsync.lamiral.info>.
Display current user and group identity. More information: <https://www.gnu.org/software/coreutils/id>.
Download torrents. More information: <https://github.com/rakshasa/rtorrent>.