Create your own engine for minimal XML-based data sources. Your programs will read, write the data to these XML data sources and you can relax while it works on low-power CPUs too. :) I personally use JSON for my regular day tasks instead of XML, but you can select either, then write an engine for that; CRUD functions and a bit of validation etc. Create, read, update and delete - Wikipedia[^]
The shit I complain about It's like there ain't a cloud in the sky and it's raining out - Eminem ~! Firewall !~