Discord
UPDATE April 2023:
Since Slack changed to a 90 day message-retention policy last year, it has been pretty useless for project work... so I've started this Discord server as well/instead.
Anyone is welcome, and encouraged, to make use of it for project work, announcements, chat and whatever
To sign-up, use the link in the members section
Slack
We have a companion Slack workspace for IM/real-time discussion and file-sharing duties, general ephemera etc. (non-archival!) - https://amoopenscience.slack.com.
To sign-up, use the link in the members section