I’ve released a side project because I needed this tool.
I use Notes on OSX quite a bit (and GEdit on Linux...) for gists, reminders, cheatsheets etc... Mainly to re-use code bits and idioms I find useful. But then I switch computers / OSes quite a bit and I don’t have these notes with me everywhere.
Also I spend a lot of time searching the same code bits over and over again, I wanted something more productive.
I wanted to solve this problem for me in a way that was compatible with my usual workflow (copy / paste!).
So I built https://www.sheethub.io it is very Beta ATM, but if you find a use for it I'm happy :)