Please note that while the Mac version currently supports VST, AU, AAX, RTAS, and TDM plugins, the Windows version only supports VST at the moment. Support for Windows AAX, RTAS, and TDM is planned in a future version of PluginUpdate.

PluginUpdate is a free utility application that helps you keep your audio plugins up to date. It supports VST, AU, RTAS, TDM, and AAX formats on Mac, and VST format on Windows (AAX, RTAS, and TDM support in Windows TBA.).

Visit: pluginupdate.com