Way back in the olde tymes, I was having trouble with the NIC driver in my Linux install. I posted a question about it on USENET, and got a reply from the guy who wrote the drivers. He asked for some info about the card, then updated the driver to support it.

Shoutout to this guy for maintaining my mainboards temperature sensors and pwn fan headers: https://github.com/Fred78290/nct6687d

Without this and https://github.com/codifryed/coolercontrol my PC was either a jet engine from the sounds or a nuclear reactor from heat constipation.

A lot of Linux drivers are like this - just one or two people maintaining them. They usually eventually mainline the driver rather than having a separate Git repo though.