Here is a quick link list of some interesting tools for use in the classroom and on projects:
Top 100 Tools For Learning -- I am a big fan of Jane Hart and her blog, Jane's E-learning Pick of The Day. At the link above, she has aggregated a list of 100 very interesting online tools to support a variety of learning activities. Definitely worth the look.
15 Effective Tools For Visual Knowledge Management -- Eric Blue's Blog has done a very nice job of compiling a number of tools (some free, some not; some online, some for download) to help you organize and visualize knowledge. I picked this up by way of the always insightful Outil Froids (Cold Tools) -- another blog worth adding to your RSS feed.
Excellent Video Search Engine Disguised As A File Converter -- Free FLV Converter describes itself as a way to easily convert online video (FLV) files to AVI, MPEG4, etc. files. This little free download does way more than that, though. You can actualy search through YouTube, DailyMotion, Google Videos, Metacafe, Spike, iFilm, Veoh, Yahoo, Crackle, Broadcaster, ZippyVideos, MySpace, Revver, LiveLeak, EyeSpot, CollegeHumor, SevenLoad, Break, CrunchyRoll, Blip.tv, lulu.tv, archive.org, TinyPic, EbaumsWorld, Uncut AOL, Guba, Youku, Tudou, Reuters, BBC News and vh1 for online videos of interest. Enormously useful.