Oh, hey. I have been meaning to post this link for while. Here is a list of the top 100 software tools selected by learning professionals (i.e. people in the education community). Lots of free tools are listed here. Some will be quite familiar to you but others may be new.
The list is here.
I have tried out some of the less commonly known tools (i.e. tools other than WordPress, Skype, GoogleMaps, etc.). Of these:
Audacity– the digital sound editing tool provides tremendous functionality and is also easy to use.
diigo– is a “social annotation” tool i.e. it lets you mark up web pages and share those marked-up pages with your friends and colleagues. Pretty useful for discussions about design and content though I really haven’t had a chance to use it (is that because I don’t have any friends )-: ).
Tiddlywiki– is personal wiki tool i.e. you can download a wiki template and use it for creating hyperlinked documents. It is basically an html file with some Java Script and the template file size is only 269 kB. In essence you can do pretty much the same kind of stuff with Microsoft Word and its hyperlinking capability but Tiddlywiki is a bit easier to use in this manner, is free, and you only need a browser to use it.
You do know that there are MS Office-compatible free suites available, right? Some are listed in this Top 100 list; have a look.