Here is my “Top 10″ list for 2013:

1. netvibes – blog aggregator
2. facebook
3. google hangouts
4. pinterest – – virtual pin board. A content sharing service that allows members to “pin” images, videos and other objects to their pinboard. Also includes standard social networking features. Soon there will be Learnist – for educators.
5. tweetchat – synchronous online chat
6. social reading with diigo – collaborative joint annotation/mark-up of  course readings.
7. audioboo –  a mobile & web platform that  allows you to record and upload audio.
8. scoopit – visual curration platform
9. openstudy – peer study groups.
10. studyblue – online flash cards, sharing, social networking.
11. recordr.tv – asynchronous video interaction/converation
12. zotero – annotated bibliography / citation tool.

Cool tools 2012
Cool tools 2011
Cool tools 2010
Cool tools 2009
Cool tools 2008