SimplePress VS. OnePress Vs. bbPress?

I don’t have any experience with simple press but bbpress is easy to use and integrate with a wordpress site for obvious reasons. Some versions of wp and bbpress don’t seem to be compatible but bbpress 1.0.1 and wp 2.8.6 work great together.

I found another one called OnePress Community. It does not work as a WP plugin but as a WP theme that integrates with phpBB (separately installed). This is neat. See this intro:

https://onepresscommunity.com/2008/12/wordpress-forums-community/

and instructions for installation:

https://onepresscommunity.com/docs/onepress/#install

bbPress is the best option for integration of a simple forum with WordPress. SimplePress is too crude to be of use IMO.

OnePress is a good option if you are looking for a more sophisticated, albeit more complex, forum solution.