m3o developers have since adopted Apache License v2 which is FOSS, but the previous Polyform-based license wasn't. From "What is polyform", https://archive.is/

m3o developers have since adopted Apache License v2 which is FOSS, but the previous Polyform-based license wasn't. From "What is polyform", https://archive.is/1YxES https://archive.is/1YxES > PolyForm is not... > Open source or free software. There are plenty of existing open source licenses. PolyForm is not a substitute for them, but an alternative for those who want to license source code under limited rights. See also: "Open source confronts its midlife crisis", https://news.ycombinator.com/item?id=18687498 https://news.ycombinator.com/item?id=18687498 "What comes after open source", https://news.ycombinator.com/item?id=19554272 https://news.ycombinator.com/item?id=19554272