Tcl/Tk was used by the first open source project I ever contributed to 25 years ago – a client for AOL Instant Messenger called TiK. It was such a thrill to be able to hack on the client, see the changes in almost real time, and share with others. It's great to see Tcl still around and kicking!
There is an open source server that implements the protocols used by AIM including TOC and Oscar. You can run TiK like it’s 2001 again.
https://github.com/mk6i/retro-aim-server/
https://github.com/mk6i/retro-aim-server/blob/main/docs/CLIE...