Apps - Early Access
Robin by @33MHz
Android 4.4+ app for Pnut (Recommended you use another app!)
ch.eer.io by @ravisorg
iOS, Android, and email @mention, reply, messaging, and group push notifications for pnut
PigPen by @bazbt3
A Python text-driven app with a range of features mostly compatible with pnut.io. (An early beta suitable for personal use whilst having little knowledge of Python.)
phazel by @dasdom
phazel is an iOS client. Right now it has a rudimentary timeline. It's focus is on the share extension though.