Plan 9 userland tools

 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.
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 Plan 9 is a distributed Unix-like operational system created by Bell Labs in
 the mid-1980s.