phpSitemapNG is a free Google Sitemaps generator written in PHP, but also generates RSS-based, txt-based and HTML-based sitemap files. It will spider your website and can also index the filesystem.
A personal link exchange manager for sml to med websites- enables the creation of html formatted link display blocks (vertical or horizontal)-saved to txt files-then included anywhere on webpages for "Adsense" style display-for recip or paid links
Monitoring tool with support to Websites, RSS, Webservices and Databases. Has notifications by email and RSS and you can access metrics like availability, latency and load time by a web-based GUI. Runs standalone with an embedded HTTP server.