Twitter

Hotot, is a lightweight & open source microblogging desktop client for Twitter and Identi.ca, coding using Python language and designed for Linux. Features Multi/single column view The program...

identi.ca is an open source social networking and micro-blogging service based on the pump.io software, using the Activity Streams protocol.

Start conversations about the things you find interesting. Share updates, photos, videos and more with your friends.

Friendica is a distributed social network application which runs on commodity hosting platforms - PHP/MySQL/Apache. (If you can install Drupal or Wordpress you can probably install Friendica) A single...

The StatusNet platform enables communities, brands and organizations to incorporate micro messaging into their own web domain. StatusNets plug-in architecture provides a feature-rich platform with...

Turpial is a microblogging client written in Python. It is lightweight, functional and does not harm the ozone layer

Create your own microblog and connect with your friends. Post from the Web, by SMS, or from desktop clients. Add comments, use icons, link Webfeeds. Take it with you on …

Heello is an online social networking and microblogging service that enables its users to send and read text-based posts and to share pictures and videos.

The new generation social networking client for people who value their time and are tired of information noise. Requires Adobe Air. The application and developer page is no longer online …

Plurk is a social journal for your life. Plurk is an easy way to chronicle and share the things you do, the way you feel, and all the other things …

To meet new friends, follow their presence on in the "background noise" of every day, discovering their tastes and their personality through their shares. The easiest way to share and …

[Now, discover the newly renewed me2day Ver.3.0.] - Adding Visited place information, pick the topics of stories such as book/album/movie and able to upload up to 5 photos at once …

Plerb is a social microblogging and chat community.

A social networking by JAYAC Inc. that is free for all and can suffer a major change every now and then so is currently little unstable.

Qaiku is a micro-blogging and lifestreaming service comparable to Twitter and Jaiku. It allows users to post short text or picture messages that other users can then comment. In comparison …

Subjot, a NYC-based startup that’s launching today to the public, might have the answer. It wants to help you connect with people you’re interested in, but only around the topics …

Whispurr is a new interactive way to stay in touch with people. We all have something to say to those that matter.

An easy-to-use microblogging community, developped by the Zagreb-based web development start-up Five Minutes, able to be connected with many other social networks and blogs.