OgOg.org is a Web application and site. On OgOg.org, you can rate RSS posts and receive good rankings and extra voting power when your own posts are rated as being good. You can carry your user-ranking and voting power over to other sites via OgOg's API (and your OpenID). OgOg attempts to be a useful hub in the sifting and ranking of blog posts.
PhunkyBB is a Web-based forum system that is distinguished by its use of XSL as its template language. By using XSL, PhunkyBB is able to run on several different platforms, not only in terms of operating system, but also programming language. At this time, it has only been tested and used on PHP, but some test runs have been done on Perl, Python, Tcl, and Ruby.
Quick Non DB MySQL Alternative is a PHP package that can be used to manage Web page content stored in files, so it can work in environments where an SQL database is not available. There are classes for managing Web page content and application users. They store and retrieve content and user records in files. The classes can perform basic operations of adding, retrieving, updating, and deleting records.