You can download Videohub 5.1 for Mac from our software library for free. The program lies within Audio & Video Tools, more precisely General. The actual developer of this Mac application is Blackmagic Design.
From the developer:
Videohub eliminates complicated manual cable patching by connecting everyone together into a fully featured professional routing switcher - which previously only large television companies could afford. Workgroup Videohub automatically switches between standard definition SDI and high definition SDI with full 12x24 routing. With 12 extra independent SDI monitoring outputs allowing separate monitoring direct from the router.
You may want to check out more software for Mac, such as Blackmagic Videohub, which might be related to Videohub.