Spasm 1.0 for Mac was available as a free download on our application library. Spasm for Mac lies within Audio & Video Tools, more precisely Streaming Media. This free Mac application is an intellectual property of SkylerLipthay.
From the developer:
Spasm is a Mac OS app that allows you to watch Twitch.tv streaming. Twitch.tv is a platform for sharing live video feeds catered specifically to video game streamers. This is a native Mac OS X that combines the best of both worlds: the HLS streaming of Safari and the ad blocking capabilities of Chrome.
You may want to check out more software for Mac, such as Avernum 6, which might be related to Spasm.