Audiotool is a fantastic example of why Adobe Flash is still relevant in a world where many web developers are calling for it's early demise. Audiotool.com is a fairly complete electronic music studio in web app form. It's something that would have been impossible just a couple of Flash versions ago, but since Adobe added the ability to generate realtime audio without hacks, creative coders have been seeing how much Digital Signal Processing they can accomplish in a scripting language. Amazingly, the answer is quite a bit. Audiotool is a modular environment - it features boxes such as 808 style drums, 303 emulations, a slew of effects boxes and other interesting modules such as tone grids and poly-synths. Any of the units can be hooked up in any order giving great flexibility. Songs can be sequenced, complete with parameter automation. It's like a simpler version of Reason full of features you normally expect to find in an expensive desktop studio app, not a free web app. Songs can also be saved and shared online and you can open other people's songs to check out their arrangements. Things are simple enough that someone new to electronic music should be able to figure things out with a few minutes of fiddling around.