Gravatar - Gravatar (an abbreviation for globally recognized avatar) is a service for providing...
YOURLS - YOURLS is a website that contains all the tools you need to create and launch your very own URL shortener. URL shorteners like bitly or TinyURL are fine for public use, but they offer limited options in terms of URL customization.
Identicon - An Identicon is a avatar which represents a hash of unique information
Polr - An open source URL shortener. A great non-profit and free alternative to bit.ly, TinyURL, or goo.gl.
Identiconizer! - Contribute to GermainZ/Identiconizer development by creating an account on GitHub.
Bitly - Get the most out of your social and online marketing efforts. Own, understand and activate your best audience through the power of the link with Bitly Enterprise.