What about a list of open-source projects in the Ukraine to support?

Of course I'd chip in a few bucks to sponsor companies on GitHub. But I can imagine there are enterprise companies that work in an OSS repo that are going to have bad resource problems and may struggle to survive (literally).

I realize there's an issue with a learning curve, and I'm just a dumb tech writer, but I'd seriously throw a few hours a day triaging out GitHub issues or doing whatever else I could to help.