ZynAddSubFX is a powerful realtime, multi-timbral software synthesizer for Linux. It has microtonal capabilities, and the instruments made by it sounds like those from professional keyboards. The program has effects like Reverb, Echo, Chorus, Phaser.

New in this v2.4.3:

• Non-session manager support
• Midi aftertouch support
• Documentation additions
• Somewhat more sane Nio defaults
• Fewer xruns with patch loading
• Misc bug fixes (solving a few possible segfault issues)

New in v2.4.2:

• made to work with mxml-2.2 (will NOT work on older versions)
• it is possible to remove completely the graphical user interface (e.g. it can run without X). For this you need to modify the DISABLE_GUI option from the Makefile.inc
• added a commandline -L which load a instrument (.xiz) - now it only loads to part 0 (you can use this option with -l to load a master file and after this the option -L to replace the part)