Nibbler - Free tool for testing how good your website is, and what you can do to improve it. Check accessibility, SEO, social media, compliance and more.
Zercurity - Monitor your infrastructure for policy non-compliance, live
CE Broker - Continuing education made easy
VatZen - EU VAT compliance solutions for online sales
Commandline Challenge - Test your command line skills
eMule - eMule is a free peer-to-peer file sharing application for Microsoft Windows.