From Native Instruments:
Battery is a full-featured drum instrument that can be used both standalone and as a plug-in in any popular music sequencer. It comes with a comprehensive arsenal of over 100 electronic and acoustic drum and percussion kits, 6 of which are included in the demo version. Sample formats such as Apple Loops, REX, Akai, EXS, and many more can also be loaded, allowing you to use just about every drum sample available, as well as any samples and audio files that you create yourself. Battery 3 also offers a wide range of creative sounds, shaping features and effects, including filters, EQ, distortion, compressor. Typical articulations such as flam, humanize, and roll add a natural feel to your rhythms. The time stretching feature allows samples to be sculpted and loops to be adjusted to the tempo of any song. Combined with an electronic drum pad or external MIDI controller, Battery can also turn any computer into an extremely versatile digital drum kit that can be played lived as a solo performance or in a band context.
What's new in this version:
Version 3.0.6 adds Pro Tools compatibility under Mac OS X 10.5 and step-by-step undo in the sample editor