Twitter is an online social networking service and microblogging service that enables its users to send and read text-based messages of up to 140 characters, known as "tweets".

MaPa Microblogging Script
User friendly Microblogging and online community script that allows you to create your own microblogging website quickly and easily. Features: Easy to use admin control panel, private message system, friendly urls, SEO optimized templates, image upload, Google Adsense integration and more.
ReVou Twitter Clone
☆☆ Revou is a revolutionary PHP driven social network software that allows you to run your micro blogging site just like Twitter. Revou is fully customizable and feature pack including SMS integration, custom API and more ☆☆
phpBlogger is an open source Microblogging System that you can download and use for free.
Twitter Clone Script
Twitter Script is a revolutionary PHP software that allows you and run your own micro blogging site just like Twitter.
Twitter Script
witter Script is a FREE yet powerful PHP micro-blogging social networking script that allows you to start your own site just like Twitter and Jaiku.
Sharetronix offers you the most advanced microbloging solution on the market. The system is completely secure behind the firewall, it is very easy to install and maintain, and it is highly customizable and user-friendly. Our global community is a testament that no rival has more advanced microblo...
P2 - Wordpress Theme
P2 is a theme for WordPress that transforms a mild-mannered blog into a super-blog with features like inline comments, a posting form right on the homepage, inline editing of posts and comments, real-time updates, and much more.
StatusNet (formerly Laconica) is a FOSS microblogging server written in PHP that implements the OStatus standard for interoperation between installations. While offering functionality similar to Twitter, StatusNet seeks to provide the potential for open, inter-service and distributed communicatio...