Hi, I am one of the engineers working on MindNode. We don’t register MindNode as the owner of “md”, but as an app that can open and save to this file type. If we don’t do this we are unable to import and export Markdown files. You can change the default app anytime in Finder by using “Get Info (cmd+i)” and choose an app in the “Open with:” section of the Info window. If you need further assistance, please contact us via "Send us an Email" on https://www.mindnode.com/support
Wrote an implementation of the ZIP specification in Swift: https://github.com/weichsel/ZIPFoundation
Main motivation back then was a side project of mine, but since I open sourced the library, the project is also well received by the iOS and server-side Swift community.
A long running side project of mine is a lightweight GIF & video utility for the Mac: https://www.peakstep.com/claquette/
It can perform a handful of often-needed video tasks like cropping, trimming or re-encoding.
It is a fully native Mac app that also comes with a nice screen recording tool to record either the Mac's screen or iOS devices connected via Lightning cable.