OnlineSequencer.net - OnlineSequencer.net is an online music sequencer that allows users to create beats and music tracks.

VCV Rack - A cross-platform modular synthesizer.

Jummbox - A modified Beepbox that have more stuff then Beepbox. It can be used just like Beepbox. The features of Jummbox is the same of Beepbox's features, but Jummbox have more stuff to offer.

Pure Data - Pd (aka Pure Data) is a real-time graphical programming environment for audio, video, and graphical...

AudioSauna - AudioSauna is a full-featured audio workstation for making music online.

Reaktor - Native Instruments Reaktor is a virtual, modular synthesis platform.