diff --git a/intra-team-communication.md b/intra-team-communication.md
index e44e6d8..9cc5416 100644
--- a/intra-team-communication.md
+++ b/intra-team-communication.md
@@ -9,6 +9,16 @@ Tasks people need to do go in GitLab, but that is *not* how tasks should be comm
 
 Discussion that takes place outside of GitLab needs to be summarized (or copy-pasted) into the relevant issue in the GitLab project.
 
+Zulip
+-----
+
+Our primary tool for internal communication is now Zulip, free software group chat software available as [LibreSaaS](https://libresaas.org/).
+
+[agaric.zulipchat.com](https://agaric.zulipchat.com) is the web interface.
+
+[Downloading an application](https://zulipchat.com/apps/) is recommended.
+
+
 IRC
 ---
 
@@ -16,7 +26,7 @@ IRC
 
 Agaric also maintains a channel for worker-owners only.
 
-Freenode has given us operator privileges for these channels.  To use it, we need to register:
+Freenode has given us operator privileges for this channel.  To use it, we need to register:
 
 ```
 /msg nickserv identify mlncn pa55w0rd
@@ -25,6 +35,8 @@ Freenode has given us operator privileges for these channels.  To use it, we nee
 
 Try to get important meetings on your [Agaric calendar](calendars).
 
-!!! note
-    Agarics can get more detail `on communication channels in the wiki <https://gitlab.com/agaric/internal/wikis/Communication-Channels>`.
+Some of our best clients are also on IRC, as are our partners at [May First Movement Technology (#mayfirst on irc.indymedia.org)](https://support.mayfirst.org/wiki/faq/chat).
 
+## Internal notes
+
+Agarics can get more detail [on communication channels in the wiki](https://gitlab.com/agaric/internal/wikis/Communication-Channels).