I'd also recommend Discourse [0], as others already have. You can see it live on the Julia [1] and Rust [2] language forums, for example.
Unless discourse has an "inline recent posts" view? That would be superb, for users not willing to commit by default to clicking on a post. It's amazing how big a difference that can make, with the scroll-happy click-averse folks trained on Facebook.
(I'm developing this, and tweaking it a bit, maybe adding a config option so it becomes even more like the Facebook feed, is maybe something I should consider, hmm)
If you look at it on a smaller screen, like a mobile, it'll look a little bit even more like Facebook, ... but maybe more text from the posts should be included.