Open source astronomy

In the early days of the open source movement, a lot of the attention was on operating systems, and later on large content management systems. These days, containers are mentioned regularly even in mainstream news outlets. The big tech stories are great, but they miss the other great activity in the niches of the open source space. I've rounded up seven interesting lesser-known projects from the past year. You can see more articles about projects like this in my Nooks and Crannies column...