repl.it : Powerful and simple online compiler, IDE, interpreter, and REPL. Code, compile, and run code in 30+ programming languages. including JavaScript, Pytho...
Audiotool : Audiotool is a powerful online music production studio right in your browser.
Luckysheet : Luckysheet is an online spreadsheet like excel that is powerful, simple to configure, and completely open source.
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...
