Contains a large database of instruments, and allows you to edit them. This is a fun toy.
It is basically a superset of all popular hardware synthesizers ever made.
Has its own built-in MIDI keyboard which is nice.
On Ubuntu 20.04 Version: 3.0.5: https://askubuntu.com/questions/220802/no-sound-zynaddsubfx-and-jack-wont-run/1297988#1297988 To do anything of interest, switch to the Advanced UI:as per
- Switch Interface Mode
The UI is completely different form what is shown on the website as of 2020: https://zynaddsubfx.sourceforge.io/, it looks instead like: https://www.youtube.com/watch?v=iVPr6iUuO3g Maybe on the website it is the new zyn-fusion UI... https://www.reddit.com/r/linuxaudio/comments/bxn3ur/some_help_for_installing_zynfusion_zynaddsubfx/ so confusing.
And they have some crappy policy of asking for 45 USD for binary downloads.
Compiling from source:fails with: Ciro gives up for now.