WebNotes, a research tool developed by, and for, serious researchers, allows anyone to highlight and add sticky notes to web pages and have those notes instantly added to a web-based research file.

Highlighting, adding notes, and sharing them are a natural fit for education. The team at Diigo knows that annotating webpages is not for everyone. But they believe there is a need for it.

The Sticky Note tool in Adobe Acrobat and Adobe Reader allows for commenting on your business PDF files. The tool can display notes in multiple colors and styles, just like its paper-based cousin, to ...