Browse free open source Accounting software and projects for Windows below. Use the toggles on the left to filter open source Accounting software by OS, license, language, programming language, and project status.
Open source ERP and CRM web software for business
SME Accounting package, General Ledger, Debtors, Creditors, Stock
A super simple way to create & send invoices, receive payments online
A full ERP system - moved to GitHub. See full description for details.
Accounting & Best Practice Business Administration System
GAzie è un software gestionale (ERP) multiazienda
Enterprise project management replacement for Project Server
The Open Source Invoice Management Software
Fast, modular open-source CRM for growing businesses
jBilling is a web-based enterprise billing system.
osfinancials accounting and business processing software
FreelancerBooks -Project Management for Freelancers and Agencies
GO Gestionale Open: an Open Source ERP for your business
Red Cherries Accounting is a web based accounting software solution.
A trading platform including ERP, CRM, and accounting
QNE: Accounting Payroll Software System Malaysia