$100, same as Greenlight. https://www.bit-tech.net/news/gaming/2017/06/05/valve-steam-direct-fee/1
MIT licence for DirectX analysis tool. http://www.bit-tech.net/news/bits/2014/05/08/renderdoc-open-source/1
Although I should really try to give a quick description of what exactly it does, I doubt I could do it justice. This is the future new addition...
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