The 0.2.3 version of TMSViewer for Mac was available to download 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 is an intellectual property of DeezjaVu. The software is included in Audio & Video Tools. We recommend checking the downloaded files with any free antivirus.
From the developer:
TMSViewer allows you to watch your favorite Twitch channels straight from your desktop. With this program you can: watch multiple streams simultaneously, download VOD's of the channels you're following, watch featured Twitch streams, search streams from most popular games, manage your list of followed channels (follow/unfollow), and more.
You may want to check out more Mac applications, such as PlayPod, Deezer Radio Player or ffmpeg, which might be related to TMSViewer.