Atari Editors & Librarians
In addition to Mac, Windows, and Apple II, there was even Chroma software for the Atari.
GenEdit ST Chroma Editor by Dave Blees . The GenEdit ST editor/librarian program from Hybrid Arts provided versatile and user-friendly programming tools to Atari ST users, and was developed by Tom Bajoras for Hybrid Arts in the mid-80's. Dave's Chroma Editor for GenEdit provided support for continuous controllers; immediate "send" function; and more. The user interface module is available for download along with sample patches and notes from Dave.
Der Chroma-Editor (Chroma Editor) was programmed by Oliver Kirschning. Along with some notes by the author (who produced the software almost by accident, and didn't even own a Chroma), Ernst Eimer  provides some information on this editor, which offers bank loading and saving, and patch editing; along with a small sequencer.