Sample payroll program/book in PHP and MySQL
Interactive Brokers TWS / IB Gateway Host Tool
Lean algorithmic trading engine by QuantConnect
Finance library for C++
A barcode library/module for python.
PHP Stock Inventory Management System - POS
Bachelor of Science (Informatik)
JavaPOS implementation and more, for Brazilian Retail applications
Sistema para la Gestión de las Aplicaciones de FUNDACITE Sucre
Utilities and extras for original Money Manager Ex
Free Java components for Quantitative Finance and Algorithmic Trading
[DEPRECATED] Yahoo finance API is shut down by Yahoo!
Build your own portfolio
Software gestionale open-source
A C++ and Python library for finance, statistics and linear algebra.