Laconica

Laconica (pronounced "luh-KAWN-ih-kuh") is a Free and Open Source microblogging platform. It helps people in a community, company or group to exchange short (140 character) messages over the Web. Users can choose which people to "follow" and receive only their friends' or colleagues' status messages. It provides a similar service to sites like Twitter, Jaiku and Plurk.

With a little work, status messages can be sent to mobile phones, instant messenger programs (GTalk/Jabber), and specially-designed desktop clients that support the Twitter API.

Laconica supports an open standard called OpenMicroBlogging  that lets users on different Web sites or in different companies subscribe to each others' notices. It enables a distributed social network spread all across the Web.

Laconica was originally developed for the Open Software Service, Identi.ca . It is shared with you in hope that you too make an Open Software Service available to your users. To learn more, please see the Open Software Service Definition 1.1:

http://www.opendefinition.org/ossd