Download of mosync 3.3 for Mac was available from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The application lies within Developer Tools, more precisely IDE.
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. This free Mac app is an intellectual property of MoSync AB. The most popular versions among the program users are 3.7 and 2.5.
From the developer:
MoSync is a Software Development Kit that allows you to develop applications for all the major mobile platforms using a single environment and C/C++ code base on Windows or OS X. With MoSync you can easily develop complex applications and then, with a few clicks, build that application for many different mobile platforms and hundreds of different mobile devices.
You may want to check out more Mac applications, such as HexDecBin, wxFormBuilder or TopCoder UML Tool, which might be similar to mosync.