When comparing Gingko vs Federated Wiki, the Slant community recommends Gingko for most people. In the question“What is the best cross-platform note-taking app?” Gingko is ranked 21st while Federated Wiki is ranked 60th.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro You can customize colors
Pro Allows focusing on one piece of information at a time
Since Gingko documents are "trees", they are always organized on the go. And since everything is written in cards, it is possible to focus on one chunk of content at a time.
Pro Easy to overview
Despite the complexity of the tree structure, it's always clear where you are, and how to quickly add your thoughts.

Pro Markdown support
All formatting is done via Markdown.
Pro Non-linear
Non-linear notetaking allows you more flexibility, freedom and creativity.

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.
Cons
Con Limited free version
The free version is limited to 100 cards and 10 documents. Depending on how you use it, this might not be enough.
Con No drag'n'drop file upload
