When comparing Federated Wiki vs Memosnag, the Slant community recommends Federated Wiki for most people. In the question“What is the best cross-platform note-taking app?” Federated Wiki is ranked 60th while Memosnag is ranked 63rd. The most important reason people chose Federated Wiki is:
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.
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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 Extremely simple and intuitive
The plugin is very easy to use. The social-media-like page layout makes it easy to navigate, while the drag-drop functionality, used to organize your content, is highly intuitive as an Evernote alternative.
Pro Automatic citations save time
Memosnag creates citations automatically, which saves the user a ton of time.
Pro Lets you save pretty much everything online
Unlike other clippers, memosnag allows you to save pretty much everything online in one simple click. That includes images, YouTube videos, websites, etc, which makes it a good Evernote alternative in this area.
Cons
Con No drag'n'drop file upload
Con Comments can only be written in Latin script
You cannot add comments in Cyrillic, or Hebrew, or any language that uses symbols other than the Latin alphabet.
Con Does not work well for note taking
Memosnag is only for saving/sharing content you've found online (sites, videos, etc.).
