Indy Web Forums
Atozed Software hosts an Indy web forum at https://www.atozed.com/forums/forum-9.html.
Delphi-PRAXIS also hosts an Indy web forum at https://en.delphipraxis.net/forum/35-indy/.
Chat Room on Gitter
Team Indy has created an Indy chat room on Gitter at https://gitter.im/IndySockets/Indy (now part of Matrix at https://matrix.to/#/#IndySockets_Indy:gitter.im).
Stack Overflow
There are several Indy-related tags on Stack Overflow:
Bug Reports
Indy’s issue tracker is on GitHub at https://github.com/IndySockets/Indy/issues.