These following 15 tools (in no particular order) are apparently some of the most popular tools being used by the teachers I spoke with from around the world.
http://edudemic.com/2012/09/15-popular-edtech-tools-being-used-around-the-world/
DawsonITE is a blog devoted to Educational Technology. It's compiled by Rafael Scapin, Coordinator of Educational Technology at Dawson College in Montreal (Canada).