OSS Capital (also known as Open Source Software Capital) is a venture capital firm specializing in backing COSS (commercial open source) startup founders globally. Their primary business activities include knowledge-transfer from successful COSS founders to new generations, improving capital efficiency in COSS companies, and promoting open source fundamentals. Their objective is to inspire 1 billion open source creators by 2030. They have a portfolio of companies including Forem, W4 Games, Cal.com, Documenso, Remix, Parallel, Stability AI, and OpenBB.