Ruby and Ruby on Rails Slack group.
Invites are manually reviewed and accepted to avoid abuse so it may take a while until you get accepted.

Popular Channels

6811

#general

Welcome rubyists! Invitation form — [URL]
This channel is for team-wide communication and announcements. All team members are in this channel.
6650

#random

A place for non-work banter, links, articles of interest, humor or anything else which you'd like concentrated in some place other than work-related channels.
2385

#jobs

Please specify remote and timezone preference where applicable!
2085

#rails

Ruby on Rails related
1704

#code

All about code
1460

#beginners_and_mentors

984

#devops

ssh [email protected] - All DevOps related talk.
294

#blab

263

#_general

Timezones

Number of members by timezones in UTC. DST applied.
1087 Slack groups are listed on Slofile.