From my G+ Feed:
sBase for Android now updated with some ubase goodness as well.
Use it in your software, use it directly or use it from RootTools: less sucky and MIT licensed!
This set of commands does not suffer from Busybox's limited functionality as the concept is different: it's one binary per command rather than having to load the kitchen sink every time.
ls, nice, du, wc, watch, kill, pidof, grep, dmesg, etc.