More and more open source projects are using it and I don't really like it, but what easy alternatives can you recommend to them?
Genuine question, as it is an open issue for me. I want to focus on my project, not setting up and maintain a forum, mailing lists, etc. on top of that.
Github discussions.
A project I follow moved all their Q&A from discord and it's a joy to both search and ask now.
Discord is actively hostile to anyone simply wanting to browse.
Whereas on discord, you might get a great answer which helps you and anyone who is immediately following that conversation but that's it.
Like getting on a call with a coworker or a collaborator on the project. You can technically record it or leave it open to the public, but most people do not because they just see it as not "informing the public" worthy.
I'd rather see something simple and plain (and functional) like phpbb.