DokuWiki - DokuWiki is a simple to use and highly versatile Open Source wiki software that doesn't require a database.
Robohash - Generate unique images from any text.
MediaWiki - MediaWiki is a free software wiki package written in PHP, originally for use on Wikipedia.
DiceBear Avatars - Pixel-Art Avatar Generator and -Provider by Identifier/Hash/Seed in JavaScript for Browsers and...
Tiki Wiki CMS Groupware - Tiki Wiki CMS Groupware, also known as Tiki (or TikiWiki), is a full-featured, web-based, multilingual, all-in-one Free/Libre Open Source Software solution. Tiki can be used to create all kinds of web apps, portals, knowledge bases, intranets, etc.
Gravatar - Gravatar (an abbreviation for globally recognized avatar) is a service for providing...