JACK2 (JACK Audio Connection Kit) is a C++ low-latency audio server for multi-processor machines that allows JACK client programs to process and route audio and MIDI data in a synchronous, sample-accurate and low-latency manner. Originally written for the GNU/Linux operating system, it also runs on various Unix platforms, Mac OS X and MS Windows.

JACK differs from other audio servers in being designed from the ground up for professional audio work. It focuses on two key areas: synchronous execution of all clients, and low latency operation.

Platform(s)
GNU/Linux
Android
BSD
macOS
Windows
Software type
JACK
Utility
Library
Software language
C++
Software features
JACK Transport
MIDI
Modular
CV
Audio input
License
GPL-2
Developer(s)
JACK development team

Recent releases Release Date
JACK 1.9.21 15 Apr '22
JACK 1.9.20 15 Jan '22
JACK 1.9.19 15 Jul '21
JACK 1.9.18 14 Apr '21
JACK 1.9.17 15 Jan '21
JACK 1.9.16 16 Oct '20
JACK 1.9.15 15 Oct '20
JACK 1.9.14 19 Nov '19
JACK 1.9.13 6 Oct '19
JACK 1.9.12 13 Dec '17