I had a couple senior FPGA classes with a JPL engineer who had worked on F-Prime, it was awesome to see the project and learn embedded from it. I think he suffered layoffs shortly thereafter when JPL did a big RIF. I'm grateful they put such work into it and make it public, their support is a significant part of the curriculum at the upper division computer engineering where I went.

It's cool to see how quickly the industry has been shifting to F Prime, cFS is great but it's run it's course. Unfortunately F Prime isn't quite as advanced as we may want (in terms of data throughput or modern features) but it is a great step forward in an industry that's often scared or unable to produce open source software.