For any fans of open-source software out there, I use beancount which I've found to be perfect for my needs. I didn't know much about double-entry bookkeeping when I started using it, but the documentation was very extensive and I learned a lot in the process of picking it up.

There are a whole collection of plugins and other resources which fit into the tool which help too, like fava which can generate webpages like this based off your data. Beancount is not the only plain text accounting tool, you can find lots of examples here.