Heytools - JavaScript tools, AJAX tools and some fully server side tools.
Ping-O-Matic - Service to update different search engines that your blog has updated.
NimbleText - NimbleText is a text manipulation and code generation tool available online or as a free download.
TotalPing! - Promote your blog with TotalPing!
WordCounter.net - Count words, sentences, paragraphs etc.
Pingler - Pingler is a tool that allows you to ping your blog or website, so that followers can know if your site is online after any update, maintenance, etc.