Code
More coming soon!
Phwitter
PHP class for accessing and displaying your recent Twitter posts.
Phumblr
PHP class for accessing posts via Tumblr's API.
Xanga Subscriptions RSS Feed
Aggregate all your friends' Xanga feeds into one RSS feed. Formerly a hosted service.
PHP MyBlogLog [external link]
PHP wrapper class for the MyBlogLog API. Hosted on Google Code
Websites
Snipplr [external link]
Code 2.0. Discover and share code snippets with other users. I am one of the developers of this project owned by Sitening.