Lunar Transportation System mission profile diagram from Lunatics Project.
Shows the stylized Earth and Moon with orbit schematics and various spacecraft combinations in different mission stages. Also includes logo graphics for in-universe LTS and a schematic of the "moon shuttle" configuration.
I'm pretty sure this is that rarity among modern software package names -- an actual acronym for (I think): "K Desktop Environment Non-Linear Interactive Video Editor".
Well, in any case, that's what it is, so it fits.
This is a pretty featureful video editor and it is my choice for editing everything from my daily screen logs to my animated project, "Lunatics!"
It's difficult to overstate the importance of this one to me.
The only notable flaws are that it does crash more often than I would like (but it recovers very well), and it might be on the slow side for rendering. Definitely good to use "proxy workflow" for high-definition projects. Which I do.
I'm using v22.12. I believe the most recent is v25.08 stable or v25.12 testing.
Shutter Encoder is a new free GPL app (donationware optionally) that is a front-end to ffmpeg. It's kind of like Handbrake, or Avidemux, or LosslessCut, but with a lot more ffmpeg options exposed. Available for Mac, Win, and Linux.