While this is true, at the moment syncspirit is a faster on a small files (upto x15), and supports different platforms.

Yep, I plan to do 10-years asked “selective sync” feature

I think the new category - “open source and hand-made/human crafted software” should be introduced

It can be independent only if you “own” hardware/software, i.e. you can manufacture, change etc. If there is no hardware independency – you loose with software, then.

For which use cases it is better than bluetoothctl linux utility?