> SQLite supports an unlimited number of simultaneous readers, but it will only allow one writer at any instant in time.

This is the one that usually gets me. For whatever reason, I tend to prefer side projects that are "take a dataset and make a tool out of it". It often ends up with simultaneous bulk writes when the dataset is updating.

I'm a big sqlite fan. Just throwing this out as a limitation for anyone deciding if it's appropriate for their project.