Zotero. iCyte. Diigo - Web Highlighter and Sticky Notes, Online Bookmarking and Annotation, Personal Learning Network. SiteJot - Free Online Bookmark Manager/Bookmark Organizer. Creating Universal Bookmarks. UMarks - The Universal Bookmark System. Delicious.com - Discover Yourself! Pearltrees.
Pearltrees videos. Pearltrees - Nice Idea - But Usability Sucks. Pearltree Search Problems. Pearltrees Competitors. LinkCloud - free visual linking. Instapaper: Save interesting web pages for reading later. Pocket (Formerly Read It Later)