There are talks internally about working towards open-sourcing it, I don't know if/when that'll happen, but it's definitely something we're interested in doing.
We didn't try any of the others, I know that there are quite a few in Golang and Java, but we're pretty python centric at the moment and felt that building it with the tools we have was a better approach.
Taking a remote job and moving to Oregon. I grew up in the mid-west and worked for a family-run real-estate business, it took a lot to leave that environment, but the housing crash of 2008 made it easier as it was a very real possibility that the company would go bankrupt.
I got a remote-job and since I could live anywhere I took the opportunity to also get away from Indiana and I haven't looked back since.
We were beginning to use React for a few things at my company, but we had our legal counsel review the license and they essentially said to use something else if we could. They weren't really worried about it, but enough so to advise avoiding it.
We didn't try any of the others, I know that there are quite a few in Golang and Java, but we're pretty python centric at the moment and felt that building it with the tools we have was a better approach.