A great tool that generates linear gradients, with the ability to customize each gradient, and download the CSS gradient code.
Dribbble Color is a wonderful tool that allows you to display all dribbble shots, based on certain colors.
uiGradients is a community contributed collection of beautiful multi-color gradients, free to use on your next UI or design project.
The super fast color schemes generator! The Coolors app allows you to create, save and share perfect color palettes in seconds!