Bitly is a link shortening service that also helps you share, track, and analyze your links. Now includes "bundles" which can be public or private, to gather your links by categories you choose. A social network style feed of other people's bitly links can be added to your dashboard.

An iOS app is available for iPhone. Wordpress plugin and API are available. Site includes a sub-site about the API for developers here: dev.bitly.com

Paletton (a.k.a. Color Scheme Designer 4) presents the user with a color wheel and several color scheme styles:

Mono

Complement

Triad

Tetrad

Free style

By moving arrows around the color wheel, users can look at and compare different color palettes suitable for web design, logos, etc. A preview option is available for checking what the color scheme would look like as part of a light or dark website.