Amazon Cloud Drive
Access files from any of your computers, your Kindle Fire, or online. Available for Windows and Mac.
Box
Box lets you store all of your content online, so you can access, manage and share it from anywhere.
Dropbox
A "cloud" storage space that works from your computer, mobile phone or tablet.
Evernote
Another "cloud" storage space that works in multiple platforms.
Zotero
Zotero collects all your research in a single, searchable interface. You can add PDFs, images, audio and video files, snapshots of web pages, and really anything else. Zotero automatically indexes the full-text content of your library, enabling you to find exactly what you're looking for with just a few keystrokes. BEST FEATURES: FREE; Bluebook citation styles. Check out this LibGuide for Zotero.
EndNote
Enables you to move seamlessly through your research process with flexible tools for searching, organizing and sharing your research, creating your bibliography and writing your paper. Must purchase.
A mind map is a diagram used to visually outline information.
iThoughtsHD
Mindmapping tool for the iPhone or iPad. Robust and easy to use. Must purchase.
FreeMind
A mindmapping tool that is FREE and open-source.