Very cool, and interesting that Martin Kleppmann of DDIA is an author. I am glad to come across this - I was brainstorming such a manifesto, now I can use this as a resource.
One local first that I recently switched to is migrating from ynab.com to my own Libre Calc spreadsheets. It took a few days to figure out all the formulas, but now I have even more control over how I track my budget.