Here is some software that supports the SimpleFIN Protocol. Being listed below does not imply that we endorse or guarantee the third party software.
To add to this list, fork this repo and submit a pull request.
BucketsLocal, private budgeting app
Strata MoneyStrata shows you where your money goes and how it moves
SimpleFIN BridgeBridge for banks without SimpleFIN

A local-first personal finance app

Track your spending using email alerts (or bank sync)
Sparky BudgetSimple Budgeting, Powerful Results
ZapYetiDebt payoff calculator and tracker
EnvelopeBudgetEnvelope method for the digital age