Evernote - Bring your life's work together in one digital workspace. Evernote is the place to collect inspirational ideas, write meaningful words, and move your important projects forward.
Padlet - Visual boards for organizing anything.
Tabbles - Tabbles use tags to organize and find files along with your colleagues.
Pinterest - Pinterest is a visual discovery tool that you can use to find ideas for all your projects and interests.
allTags - allTags is a free, tag based file management application.
Pearltrees - Pearltrees is a place to organize all your interests. It lets you organize, explore and share everything you like.