Very often it becomes unclear what engine to choose when creating a full-fledged forum. There are a number of paid solutions which challenge anybody not to be, but at the expense of the free options there are questions.
If You already have bumps and are disappointed in good engines for the forum, then try the totally free bbPress, based on the popular WordPress. The forum will be well protected from hacking, will be fast and not cumbersome, and also easy for integration and use. In addition, it is possible to note compliance with all modern standards, fast and beautiful design.
bbPress does not occupy much space and resources, so use the forum based on it is a pleasure. He is ready to do all assigned work in a short period of time.
The configurable settings.