I have just updated and completely revised the webtools site for teachers, students and, well, anyone really.
Lots of new additions and I have included some notes and suggested use decsriptions for a range of tools which will also be featured on the LSIS Excellence Gateway soon. (I have provided content - but not the design - for a Third Sector toolkit that will be hosted there).
If anyone has any more ideas just let me know. I'm sure I've missed plenty and, of course, new ones are appearing every week now which I'll try and keep up with.