docs: docs/index: Mention more alternatives
Rising tide lifts all ships and such...
@@ -40,7 +40,12 @@ third-party. Just like IntenseDebate, livefrye etc. When you embed Disqus, they
can do anything with your readers (and probably mine Bitcoins, see the loading
times).
-Isso is not the first open-source commenting server:
+Isso is not the only open-source commenting server:
+
+* `commento <https://commento.io/>`_, written in Go. Requires a
+ `postgresql <https://www.postgresql.org/>`_ database.
+
+* `Remark42 <https://remark42.com/docs/1.6/>`_, written in Go.
* `talkatv <https://github.com/talkatv/talkatv>`_, written in Python.
Unfortunately, talkatv's (read "talkative") development stalled. Neither
