Minimalistic forum software with focus on code quality

We are looking for a forum software we can integrate with our existing website. The most important thing for us is code quality and minimalism. Integration will be so tight, so we probably won't be able to update it in the future.

So far I can think of bbPress and Vanilla. Both have problems: the former is not actively developed (the last stable version was realesed a year ago) and the later one is very unstable (IMHO).

Any thoughts and开发者_开发百科 suggestions are greatly appreciated.

Thank you!

There's MyLittleForum, which however is a forum software, not a bulletin board. Also you should use the still separately maintained 1.x version, as the new has more feature creep. The code quality is acceptable IMO. And you won't easily find a forum software which uses parameterized SQL or enforced input filters. (Been looking myself, Forum/Board written atop one of the big PHP Frameworks)