MindMeister : MindMeister is an online mind mapping tool that lets you capture, develop and share ideas visually.
Mind42 : Collaborative mind mapping in your browser
SQL Fiddle : A tool for easy online testing and sharing of database problems and their solutions.
RegExr : RegExr is an online tool to learn, build, & test Regular Expressions (RegEx / RegExp).
metaflop : Metaflop is an easy to use web application for modulating your own fonts. Metaflop uses Metafont, which allows you to easily customize a font within t...
