REI3

Payment switch to make payments fast, reliable and affordable. Connect with multiple payment processors and route traffic effortlessly, all with a single API integration.

A

Actual

actualbudget.org

Local-first personal finance tool based on zero-sum budgeting, supporting synchronization across devices, custom rules, manual transaction importing (from QIF, OFX, and QFX files), and optional automatic synchronization with many banks.

F

Firefly III

firefly-iii.org

Firefly III is a modern financial manager. It helps you to keep track of your money and make budget forecasts. It supports credit cards, has an advanced rule engine and can import data from many banks.

L

Lago

getlago.com

Metering and usage-based billing.

A

Akaunting

akaunting.com

Accounting software designed for small businesses and freelancers.

I

Invoice Ninja

invoiceninja.org

Powerful tool to invoice clients online.