GoatTracker - This is a crossplatform C64 music editor.
OnlineSequencer.net - OnlineSequencer.net is an online music sequencer that allows users to create beats and music tracks.
1BITDRAGON - 1BITDRAGON is a user-friendly music creation software that allows anyone to make music without having to be an expert or have thousands of dollars of gear.
AudioSauna - AudioSauna is a full-featured audio workstation for making music online.
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.
Magix Samplitude - Record, play, mix and master: Samplitude Music Studio offers an impressive range of features for flexible, high-quality music production.