When comparing Federated Wiki vs The Brain, the Slant community recommends The Brain for most people. In the question“What is the best cross-platform note-taking app?” The Brain is ranked 30th while Federated Wiki is ranked 60th. The most important reason people chose The Brain is:
With an account for syncing on their servers, you can run the brain on multiple computers.
Specs
Ranked in these QuestionsQuestion Ranking
Pros

Pro Stories
Arrange your personal view of a wikis content by opening local and remote pages next to each other. Shift-clicking a link will open it next to already open ones. The story will then be visible in the URL.

Pro Free and Open Source Software

Pro Versioning
Your page is the Journal of the page.

Pro Drag and drop refactoring
Recompose your contents all the time.

Pro Federation
Write locally, fork to your public site. Fork from others.
Pro Cloud syncing
With an account for syncing on their servers, you can run the brain on multiple computers.
Pro Good support
Worthwhile support is offered, especially for those that pay for a subscription.
Cons
Con No drag'n'drop file upload
Con Expensive
There is either a $15 a month subscription fee or a license that ranges from $219 to $299. There is a 30 day free trial for those who would like to test it before subscribing or purchasing, but overall to use this app it can be pricey.
Con High learning curve
There is a little bit of a learning curve with all software, and this is no exception.
