Why pay $5 for a laminated piece of paper from your neighborhood bookstore when you can get it online for free. Refcardz, of refcardz.dzone.com, hosts a large series of quick reference sheets for developers in pdf. For the price, your email address in registration, these documents are of surprisingly high quality.

Like LabelLinks4Gmail this desktop application is basically a labeling system with nesting capabilities, yet it has a few unique features. It is specifically designed to assist the organization of digital data as well as common household property (e.g. files, keepsake items, books, video, etc.)

Like labels? Like folders? LabelLinks4Gmail allows you to label your labels as well as your emails, combining the best of both worlds. Here is the format: [label name]:[any number of parents separated by comma] It also supports Folders4GMail format.