In it's day, Opcode Galaxy Plus Editors was hands down the best synth patch librarian and editor available. Recall that these were the days before Sound Diver. It had seamless integration with Studio Vision.
Previously, Opcode produced patch librarians for individual synths and sold them under the MIDIMAC software titles. Galaxy started life when one of Opcode's customers (Bryan Bell) suggested that they integrate all of these librarians into a single package and thus Galaxy The Universal Librarian was born, shortly thereafter becoming Galaxy Plus Editors.
You can download the user's manual for Galaxy 2.something as well as a few other docs relating to Galaxy in the Opcode section of the manuals area.