A free and open source personal finance manager
(click on the icons for more information)
"Firefly III" is a self-hosted financial manager. It can help you keep track of expenses, income, budgets and everything in between. It supports credit cards, shared household accounts and savings accounts. It’s pretty fancy. You should use it to save and organise money.
You can read more about the way of working, the features and the current state in the documentation ("read more").