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 Document annotations Annotate screenshots Text Highlighting ... Bookmarks Browser Sync IFTTT integration PDF annotation Real time collaboration Save web page for offline use Social Bookmarking Add a feature 267 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
