Free Desktop book-keeping software for small-businesses & freelancers
A Beautiful Private and Secure Desktop Investment Tracking Application
Open Data, more than 50 financial data
Fast, privacy-focused personal finance app
Ultimate Zero-Budget Revshare Solution for Indie Teams
Fullstack open source Invoicing application made with MongoDB
Free & Open Source Invoice App for Freelancers & Small Businesses
Open-source and self-hosted CRM platform based on Laravel 5
Desktop and mobile solution for invoicing
Lean algorithmic trading engine by QuantConnect
Project and Portfolio Management
Flat sharing costs manager with statistics
A professional, open source, much of use for students and c++ pioneer