+* **<hyades,\*,\*>** — If you're interested in getting involved with Hyades, subscribe here to see Hyades development happens in real time. *High traffic.*
+
+* **<scripts,\*,\*>** — If you're interested in getting involved
+with [Scripts](https://scripts.mit.edu/), subscribe here to see what
+the Scripts team does behind the scenes. *High traffic.*
+
+* **<barnowl,\*,\*>** — Discussion of [BarnOwl](https://barnowl.mit.edu/), a zephyr client written and maintained by SIPB members.
+
+* **<debathena,\*,\*>** — Discussion of [Debathena](https://debathena.mit.edu/), a project designed to bring the functionality of Athena to your Debian or Ubuntu system. Debathena is also the basis of the next official version of Athena. *High traffic.*
+
+* **<dodona-discuss,\*,\*>** — Discussing the development and coding of [Dodona](http://dodona.scripts.mit.edu), a SIPB zephyrbot.
+ * **<dodona,\*,\*>** — The "official" class for Dodona to run and give advice on. Currently *low traffic*, as Dodona rarely runs.
+ * **<dodona-test,\*,\*>** — Class for trial runs of Dodona. *High traffic*.
+
+* **<clockworks,\*,\*>** — Discussion of [[clockworks|projects/clockworks]].
+
+* **<mitex,\*,\*>** — Discussion of the development of [mitex](http://mitex.mit.edu). Note that this class receives a zephyr with each commit made.
+
+## Other Useful Classes
+
+These are not actually SIPB-related classes, although many people
+affiliated with SIPB and/or IS&T listen to them. You should not send
+zephyrs to any of these classes unless you have a good reason.
+
+* **<consult,\*,\*>** -
+
+* **<filsrv,\*,\*>** — Announcements of filesystem outages
+
+* **<3down,\*,\*>** — Recieves zephyrs about MIT service status (see also [3down website](https://3down.mit.edu/))