Easy Mess Web-based instant messaging service. It requires no download. It can be embedded on web sites. Supports groups and communities. http://www.ecmess.com:8080/EcMess/ENGLISH

Away Messages Suggestions for away messages to use with instant messaging clients. http://www.awaymessages.com/

Jephyr Instant Messaging System Protocol specification for client-server instant messaging with a Java implementation. http://hugh-kennedy.chicago.il.us/jephyr/

OnlineCall Instant messaging service that supports video and voice conversations. http://www.onlinecall.com/

PresenceWorks Tool for integrating instant messaging client capabilities into business software. http://www.presenceworks.com/

Space bar Telnet chat based on the hyperreal server. http://www.spacebar.com/