So here it is, Discourse running on Replit. This is one of the methods of running Discourse for free. The problem? It’s not worth being cheap, as the loading times are lengthy. Just watch this:
How can this be done?
The people at Replit managed to port the forum software and make it possible on Replit. You can find the template used at https://replit.com/template/discourse. It provides the essentials for porting Discourse over to Replit. It is definitely possible to install, but 90% of the time, you will be running into errors. Replit works on cloud machines, but these cloud machines are not very powerful. (which likely explains how poorly Discourse was running)
There is also a way to host cheaply by upgrading the Replit cloud machine to the $7/month or $21/month plan, which would probably make the forum run better. However, the free discourse version has its drawbacks. The domain is https://discourse.t-for-twofoursixeight.repl.co/latest if you want to test. Moreover, it sometimes gives way to 502 Server errors!