Usage Guides
How to import extensions - Taifun
Extension Collections
@TimAI2 Most Used Extension List
The unofficial extensions directory by puravidaapps.com - Taifun
Extension Directory - Thunkable
Thunkable extensions announcement
All Rescued Extensions from Thunkable Classic Community - Gordon_Lu
All Rescued Extensions From AppyBuilder Community - Salman_Dev
Extension Construction
How to create an Extension - HAL
Extension Template Repository - ewpatton
How to extension dev (env setup) - HIFI APPS
Extension Fixes
Extension Version Upgrade Problem Cleanup - Juan_Antonio
Missing Android Support Library fix - Recast tool - dora_paz, Kodular
Extension Forums
AI2 Extensions forum
Notable Extensions
Microsoft Emotion Recognizer
Microsoft Image Recognizer- Thunkable
Notification Extension - Qiang Wei
Extension Builder Graveyard
AppyBuilder online extensions builder IDE - Amerkashi (dead site as of May 2022)