Streamcast 1.5 for Mac could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. The software is included in Audio & Video Tools.
From the developer:
Streamcast is a one stop solution for creating live streams from you mac. You can create as many windows as you need to display the output from all your devices.
Streamcast is perfect for lets plays, reviews, tutorials, presentations and more!
Capture your screen to a movie file and/or stream it live to any live streaming platform such as Twitch, YouTube, Mobcrush, Facebook and many many more.
You may want to check out more Mac applications, such as PlayPod, Deezer Radio Player or EyeConnect, which might be related to Streamcast.