Diigo Better reading and research with annotations, highlighter, sticky notes, archiving, bookmarking and more. Freemium $ $ $ Web Android iPhone iPad Internet Explorer ... Chrome Safari Firefox Bookmark organization Annotate screenshots Text Highlighting Browser Sync ... Document annotations IFTTT integration PDF annotation Real time collaboration Save web page for offline use Social Bookmarking Add a feature 253 Like
Hypothes.is Annotate with anyone, anywhere Our mission is to bring a new layer to the web. Use Hypothes.is to discuss, collaborate, organize your research, or take personal notes. Free Open Source Web Chrome Firefox Ad-free Google Chrome Extensions Text Highlighting Web-Based ... Website annotation Add a feature 30 Like
gdriv.es Google+ and Facebook Comments read and write comments based on website using google+ or facebook Free Web No features added Add a feature 0 Like
