Jackbeat is an audio sequencer.

Features:

• Drummachine interface with animations for easy and playful editing
• Built for both composition and live setups with high interactivity needs
• Extremely easy to use but yet powerful by connecting with other applications using JACK and OSC
• Loads and saves .jab files, Jackbeat's xml+tar open file format
• Supports ALSA, CoreAudio, PulseAudio and JACK