When comparing Federated Wiki vs vimwiki plugin for vim, the Slant community recommends vimwiki plugin for vim for most people. In the question“What is the best cross-platform note-taking app?” vimwiki plugin for vim is ranked 23rd while Federated Wiki is ranked 60th.
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 Internal link makes it easy to create a knowledge network
Pro Comfortable for Vim users
Has a very minimal learning curve for people already used to Vim, as the preset shortcuts are very easy to learn and don't conflict badly with other Vim behaviors.
Cons
Con No drag'n'drop file upload
Con Limited to use with vim only
vimwiki is a plugin for vim, so you won't be able to make use of it if you're not a vim user (and don't want to be).