Tor Messenger - The easiest app yet for anonymous, encrypted IM
Smaller - Make your websites load faster
Sizzy - The browser for designers and developers
Website Grader - Grade your website's strengths and weaknesses in seconds.
Reviewipedia - Ratings and reviews of anything and everything
Checkbot - Checkbot will boost the SEO, speed and security of your site by checking you're following 50+ web best practices. Browser extension with free and paid plans.