Apps

Web

JellyTime - A web client for every browser and screen size

Noodle - Mobile-friendly web client

Patter - Private messages and chats

Brusque - Chrome posting and notification extension

Broadsword - Basic public timeline web app. Does not work for Safari

Catchat - 10Century and Pnut.io timeline on one page

iOS

Arachis - iOS client

ChimPnut - Feature complete client for iOS

Pnut Butler - iOS-wide Pnut sharing extension for photos, links and text

Phazel - iOS client

Patter for iOS - Messeging and Chats for iOS (Beta, not yet released)

Riposte - iOS client (Beta - not yet released)

Yachimata - Photo-share extension for iOS (Beta, not yet released)

Yawn - iOS client for Pnut.io (Beta, not yet released)

Android

Robin - Unstable alpha, with public timeline and chat and PM channels

Goober for Android - A native Android client

Blackberry

Goober for BlackBerry - A native BlackBerry 10 client

Others

Apero - Native MacOS client

Enuts - A Windows and MacOS desktop client

Vidcast / MNDP

Texnut - A command-line client based on Texapp

Nutcracker - Try out the Pnut.io API

Paste - A clipboard for pnut.io

Market Bucket - A shopping list for pnut.io

Mikutter_pnutio - Extension for the Mikutter Twitter app

NuttyBot - A bridge for connecting pnut.io with Telegram and Matrix