Download QL Editor 4.0.1 for Mac from our website for free. The program lies within System Tools, more precisely Device Assistants. This free software for Mac OS X is an intellectual property of Yamaha.
From the developer:
QL Editor is a simple application that enables you to remotely control a Yamaha QL mixing console (such as QL5, or QL1; hereinafter collectively called “QL” in this document).
You may want to check out more Mac applications, such as QL, Brother QL-710W Utility or Wondershare PDF Editor Pro, which might be related to QL Editor.