Comment by susam

Indeed! Sometime between 2010 and 2015, I used to often work with Windows computers, so I wrote a tool for myself back then to remap Caps Lock to Esc on Windows machines:

https://github.com/susam/uncap

While it was certainly possible to do that by editing Windows registry (and I have noted those techniques too in the README), registry changes couldn't be enabled or disabled without a reboot. That's what motivated me to write the above tool. And indeed, having the Caps Lock work like Esc made using Vim a much better experience!