GDTiddyWiki, this is awesome !!!
You an upload it somewhere if you want to use it online or put it on a memory stick, even better!
You can set up different subjects, tasks or projects to be in the main menu and store different references on each page, I use this has kinda a digital filing cabinet for resources, thoughts and ideas, basically anything i might want to look or think about later, but it allows me to organize it in a way related to the subject or project. So i've i'm working on something I can go there and read all the ideas, thoughts and resources on that in one click, brilliant!
http://shared.snapgrid.com/