From Sonoma Wire Works:
RiffWorks T4 is free guitar recording software. Record ideas at the moment of inspiration, create songs, and cast tunes to RiffWorld.com. Includes 4 tracks plus drums, 7 effects, InstantDrummer, AmpliTube 2 Duo LE and Studio Devil BVC amp plug-ins, a Quick Start tutorial in 14 languages (Danish, Dutch, English, Finnish, French, German, Greek, Italian, Japanese, Nowegian, Portuguese, Russian, Spanish, and Swedish), and more. For a small fee RiffWorks T4 users can collaborate online with musicians worldwide. RiffWorks loop-based recording workflow allows collaboration without latency or distance issues. As a track is recorded, it streams to other players and is perfectly in sync. Contributions are saved on RiffWorld.com and can be opened later in RiffWorks to continue recording. An unlimited number of musicians may contribute to a song (4 at a time). RiffWorks T4 users get 24 tracks/layers plus drums while collaborating. online. Mac & PC musicians worldwide are creating songs together no matter how far apart they are. RiffWorks T4 users may participate in RiffRumble song contests to win guitars, music gear, software, and more. Upgrade to RiffWorks Standard for more features like 24 tracks plus drums, REX Player, ReWire, 9 InstantDrummer session loops, optional 32-bit recording and mixing, new export features.
Upgrade to RiffWorks Standard for 24 tracks instead of the 4 that come with RiffWorks T4, REX, ReWire, 9 InstantDrummers, 32-bit recording, export, 60 days of RiffLink.