When comparing Diigo Outliner vs Unclutter, the Slant community recommends Unclutter for most people. In the question“What are the best OS X tools for writing and finding plain-text notes?” Unclutter is ranked 3rd while Diigo Outliner is ranked 4th. The most important reason people chose Unclutter is:
Unclutter lives in the navbar at the top of your screen, and is always accessible. Any files and notes stored in Unclutter can be quickly accessed from anywhere, with just a mouse movement and scrolling down.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Easy to organize ideas, tasks, links and notes hierarchically
Pro Links can be added from anywhere
Links can be added at the bottom of the outline from any web page, using Diigo's bookmark functionality.
Pro Nice-looking pasted URLs
Pasted URLs automatically turn into href links named with the title of that page
Pro Convenient and fast access to files and notes
Unclutter lives in the navbar at the top of your screen, and is always accessible. Any files and notes stored in Unclutter can be quickly accessed from anywhere, with just a mouse movement and scrolling down.
Pro Keep desktop clean(er)
Instead of keeping commonly used files on the desktop, you can tuck them away to the top of the screen. This can unclutter your screen, or create more room for more icons if you like quick access to everything.
Cons
Con Impossible to add links, items and notes by email
Con Can't keep visor open when typing in other applications
The unclutter visor will not stay open when working/typing in other apps. Sometimes it is desirable to use the visor to re-type things, it's not possible outside of copying and pasting, or opening and re-closing the visor.