Download of muleStudio 3.6 for Mac was on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The program relates to Developer Tools. This free software for Mac OS X was originally developed by MuleSoft Inc. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe.
From the developer:
Mule Studio is the preferred way to design, test and deploy applications for Mule ESB and iON. Mule Studio support similar features as Mule IDE around XML code completion, etc. and add many other graphical ones on top of that. So it can be used by different type of users. With Studio GA approaching, we will be deprecating Mule IDE. Mule IDE will be still available but all new development will go towards Mule Studio.
You may want to check out more Mac applications, such as wxFormBuilder, TopCoder UML Tool or Jaxe, which might be related to muleStudio.