xxdiff is a powerful tool for viewing the differences between two or three files, or two directories, and can be used to produce a merged version. The texts of the two or three files are presented side by side with their differences highlighted with colors for easy identification. Among its features are:

9base is a port of following original Plan 9 userland tools to Unix: ascii, awk, basename, bc, cal, cat, cleanname, cmp, date, dc, dd, diff, du, echo, ed, factor, fmt, fortune, freq, getflags, grep, hoc, join, look, ls, mk, mkdir, mtime, pbd, primes, rc, read, sam, sed, seq, sha1sum, sleep, sort, split, strings, tail, tee, test, touch, tr, troff, unicode, uniq, unutf, yacc.

neovim-qt provides a Qt5 GUI interface for neovim

This is an Application Menu (Global Menu) plugin. It is built using the Unity protocol and libraries and provides all features found in the Unity implementation.

This is a 3-D multiplayer game for X. You can play by yourself, use computerized players ("bots"), or you can use a TCP/IP network and play against other players.