Gravatar - Gravatar (an abbreviation for globally recognized avatar) is a service for providing...
Robohash - Generate unique images from any text.
DiceBear Avatars - Pixel-Art Avatar Generator and -Provider by Identifier/Hash/Seed in JavaScript for Browsers and...
Evatar - The most straightforward global avatar service.
The Character Creator - aims to provide a fun and easy way to help you find a look for your characters.
Identicon - An Identicon is a avatar which represents a hash of unique information