I have just created an alternative to knock (and other tools, just going for the simplicity of knock) for downloading ACSM files. Thought some of you might find it useful. It is still pretty early in its development, but it is working.
I misread that acronym at first and was like 😳
Is there a difference to the calibre plugin (https://github.com/Leseratte10/acsm-calibre-plugin), besides being an independent program?