We're looking for a Community Management platform that has the features and usability of Reddit. Unfortunately we are not experts in Community Management tools, so are doing analysis a bit blindly.

We initially liked Discourse, as it is a pretty common open-source platform for online forums. However after standing up a proof of concept we are now highly skeptical that it scales horizontally enough for our needs...the concept of "infinite user-created sub-reddits" are an absolute must-have, and has been the major sticking point on the tools we have reviewed and piloted so far (including a number of proprietary non-open source options). Discourse themselves told us to limit the number of Categories that should be used, so my sense is that this is an inherent architectural limitation that can't be overcome without significant investment and branching of the code base. Comment voting is also a must-have, as well as a few other things. We are finding that these seem to be strengths of Lemmy and other Reddit-style platforms. And Lemmy seems to be the most popular...with the most community support. However if there is another platform that might better option, I'm open to it.