Download of Streambox Media Player 3.0.6 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. This free Mac application was originally produced by Streambox Inc. The software lies within Audio & Video Tools, more precisely Streaming Media. We recommend checking the downloaded files with any free antivirus.
From the developer:
Streambox Media Player is an 4K HDR player for IP video streams arriving from Streambox encoders or from the Streambox Cloud services. This media player is used by media content providers to remotely review live streams, and by post-production services for collaborative workflows with colorist, editors, and producers, and by media producers for on-site or on-location monitoring.
You may want to check out more Mac applications, such as Macgo Free Mac Media Player, Kyaya Media Player or Kyaya Media Player Lite, which might be related to Streambox Media Player.