a list of all rooms, recently active rooms first
in 15 hours  Weekly Contact game, tomorrow  Interrogate Erik Darling, in 3 days  Inspiring Weekend

Test room

Test room for https://meta.stackexchange.com/questions/325096/why-can-only-some-child-meta-sites-host-chat-rooms-is-there-any-way-to-bypass-t
8h ago – peterh
12
2

Public 3D Printing Room

Discussion forum for https://3dprinting.stackexchange.com/
Nach0z: 17h ago, 450 posts (6%)Dan Hulme: 2d ago, 338 posts (4%)Trish: 3d ago, 1296 posts (18%)
28

The Pitstop

For the motormouth in you! (http://mechanics.stackexchange.com)
Rory Alsop: 1d ago, 4198 posts (3%)Bob Cross: 2d ago, 7067 posts (5%)bertieb: 7d ago, 22 posts (0%)user50391: no posts
208

The Velodrome

General discussion for http://bicycles.stackexchange.com
10h ago – gschenk
gschenk: 10h ago, 4764 posts (5%)DavidW: 19h ago, 32 posts (0%)Criggie: 1d ago, 17971 posts (21%)Mithrandir: 2d ago, 207 posts (0%)freiheit: 20d ago, 3476 posts (4%)Rory Alsop: 76d ago, 162 posts (0%)
172

General Network Engineering recommend

Product Recommendations / discussion. This room has different standards than the main Q&A site. Open discussion & opinions are welcome here; however, please do not post questions here that are on-topic for the main site.
10h ago – JukEboX
JukEboX: 10h ago, 1343 posts (9%)Ron Maupin: 16h ago, 2020 posts (13%)Teun Vink: 9d ago, 145 posts (0%)YLearn: 15d ago, 268 posts (1%)
149

Contact

For playing the game Contact, where one person tries to "defend" a word against being guessed and others try to "attack". See https://puzzling.meta.stackexchange.com/a/5992 for more info. Bot source code: https://github.com/GentlePurpleRain/Lens
143

Modern Abstract Analysis

For functional analysis, measure theory, and related areas. MathJax in chat: http://www.math.ucla.edu/~robjohn/math/mathjax.html
10h ago – Luis Felipe
17

Collecting examples of comments and p

Related to https://chat.stackexchange.com/rooms/64952/conversation/problems-in-posts-and-comments-added-by-automated-adding-of-begingroup-endgrou
10h ago – Luis Felipe
616
2

Number Plotter Discussions

Discussion related to the use of algorithms and programs to visualise real numbers and other sets. Number theoretic discussion based on the graphical interpretation are encouraged, so as relevant proofs
10h ago – Luis Felipe
108
2

Probability and Statistics

Any discussion on Probability and Statistics.For rendering LaTeX math.ucla.edu/~robjohn/math/mathjax.html
10h ago – Luis Felipe
25

Set theory

Anything related to set theory. For instructions how to render MathJax(TeX) in chat see http://meta.math.stackexchange.com/a/3297
10h ago – Luis Felipe
42

Basic Mathematics

This room is meant for all basic mathematical discussion, including basic logical reasoning, simple properties about natural/rational/real/complex numbers, induction/recursion, elementary combinatorics, synthetic geometry, ...
10h ago – Luis Felipe
yh05: 2d ago, 45 posts (0%)user21820: 2d ago, 2450 posts (43%)
55

Linear & Abstract algebra

For any discussion concerning linear, abstract or even elementary algebra
10h ago – Luis Felipe
73

CRUDE

For feedback/discussion/requests of Close/Reopen/Undelete/Delete/Edit for questions and answers on Math SE (for Math Meta stuff go to https://chat.stackexchange.com/rooms/64952/math-meta-chat instead)
10h ago – Luis Felipe
Makyen: 1d ago, 250 posts (0%)
217

Board and Card Games

General discussion for http://boardgames.stackexchange.com. Chat about board games, card games, or the site itself.
10h ago – Joe W
murgatroid99: 30d ago, 8970 posts (17%)JonTheMon: 30d ago, 1275 posts (2%)
50k
157

Math Mods' Office

For informal chat with the site moderators about moderation, spam, troublesome users and other issues you need ♦ input on.
10h ago – Luis Felipe
user334732: 12h ago, 107 posts (0%)
228

Hub of Reason

General discussion about http://skeptics.stackexchange.com/
11h ago – Barry Harrison
25k
242

Homotopy Theory

A room for anyone interested in homotopy theory, or any nearby fields (e.g. category theory, algebraic geometry). To activate chatjax in this room go to http://meta.math.stackexchange.com/questions/1088/should-chat-have-tex-support/3297#3297
11h ago – Saal Hardali
Denis Nardin: 13h ago, 8636 posts (7%)Charles Rezk: 3d ago, 805 posts (0%)Tom Bachmann: 3d ago, 377 posts (0%)ufabao: 9d ago, 41 posts (0%)Thomas Rot: 31d ago, 132 posts (0%)Aras Ergus: 218d ago, 1 posts (0%)Bertram Arnold: 343d ago, 11 posts (0%)Mike-Doherty: 1317d ago, 20 posts (0%)
285

The Time Machine

General discussion for http://history.stackexchange.com. For urgent issues, idle chatter, and everything in between. Reference requests welcome.
11h ago – LangLangC
LangLangC: 11h ago, 419 posts (5%)Mithrandir: 139d ago, 254 posts (3%)
131

Spyfall

For playing the game Spyfall. Join/create games here: http://spyfall.crabhat.com More info here: https://puzzling.meta.stackexchange.com/a/5991
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