Stumbled upon a new 505 (D2 and JX305) editor. It's in beta but very promising so far!
You can edit multiple tones at once which is nice.
http://ctrlr.org/groovebox-editor-for-r ... 05-and-d2/
New amazing 505 Editor
Re: New amazing 505 Editor
Great find, I miss my 505, I have the 909 and I am trying to locate any 505 sounds that might reside in it. But man I do miss it, the raw filter it had was just sweet. I would have loved using this editor with it