SEO Tools provides tools for search engine optimization. Spider SEO: generates meta tags for all pages of a website. Web Page Optimizer performs analysis and changes in a web page. A graphical user interface is linked with a scriptol program that gene
LayManSys - Layout Management System - is a PHP framework, that helps you providing a consistent look&feel of your web pages. It stores the meta information about the documents in RDF files and uses them for generating the HTML frame (<head> and footer).
Java Meta Weblog API (jMwa) is a Java util library and implementation of the MetaWeblog API. For example it allows to post to a weblog (that supports XML-RPC and the MetaWeblog API).
MacOsX Finder like browser for UN*Xes with Win* like Control Panel function. Requires firefox (due to XUL support) and SQLite for meta data search (similar to spotlight)