You can download Wine Staging 2.0 for Mac from our application library for free. The actual developer of this free Mac application is winehq.
From the developer:
Wine Staging is the testing area of winehq.org. It contains bug fixes and features, which have not been integrated into the development branch yet. The idea of Wine Staging is to provide experimental features faster to end users and to give developers the possibility to discuss and improve their patches before they are integrated into the main branch.
You may want to check out more Mac applications, such as Personal Wine Curator, Wine or Expert Wine Cellar, which might be similar to Wine Staging.