Base on their blog post, it looks like its lack of maintenance was the driver for the decision to go open source http://impactjs.com/blog/2018/05/impact-is-now-

Base on their blog post, it looks like its lack of maintenance was the driver for the decision to go open source http://impactjs.com/blog/2018/05/impact-is-now-free-open-source http://impactjs.com/blog/2018/05/impact-is-now-free-open-sou...