bootask: kernel mod to let you set venti ip and/or system name at boot by setting those variables to =ask in plan9.ini
confighelper: scripts for various plan9 config tasks, but special purpose to the 9gridchan.org preconfigured QEMU image. Potentially destructive to your system's config.
listfs: 9p fs implementing simple database functionality - in progress but already usable.
tripcodefinder: tripcode finding tools for chan style imageboards. Requires openssl libraries to compile. nonexistent/primitive UI.
hashfuncs: use several possible algorithms for generating hashes sized to a given input value