We have Matrix/Element chat that is public and bridged with Libera IRC.
We also have an unlinked Discord group chat set up. This may eventually be linked to the above.
- Chat in the Discord group at https://discord.com/invite/jMBu9rfthZ
There is also a new, separate Telegram group.
- Chat in the telegram group at https://t.co/FhJZ0MSrZ0?amp=1
The older IRC channel is still used by some people, but does not have much active discussion.
- Chat at the 2600Net/#philly2600 channel