drumbit - A very easy to use drum machine.
Drum Loops for Guitar - Drum Loops for Guitar is one of the reliable applications to design highly accurate BPM tunes used and tested by many professional musicians.
Sampulator - Make (and record) beats on your keyboard
Loopz – Best Drum Loops! - Loopz – Best Drum Loops!
Type Drummer - Drum by typing
Onemotion Drum Machine - Drum Machine is a fully-featured web-based app developed by OneMotion to enable you to create Drum Beats and patterns.