AI2U - Krupong (abandoned project, last version June 2018)
App Inventor Coffee Shop (dead since 2014)
App Inventor en Español (group has been deactivated)
App Inventor Instructors (group has been deactivated)
App Inventor Open Source (group has been deactivated)
App Inventor questions, help, hints, support (old closed forum)
App Inventor release announcements
AppyBuilder (this distribution merged with Kodular)
Block2Code (this distribution has been closed)
Programming with App Inventor (dead since 2014)
Thunkable (this distribution closed its classic version)