Free Blog Scripts for Micro Blogs

StatusNet

StatusNet is the open source microblogging platform that helps you share and connect in real-time within your own domain. With StatusNet you can encourage collaboration, build and engage your community, and be in command of your brand.

PageCookery

PageCookery is the first public offering of single-user version of the open source microblogging program, PHP + MySQL based architecture is a set of safety, efficiency and stability, to “share”, “discovery” for the concept of Web 2.0 solutions to micro-blog.