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.
Personal and small-business finance manager
Open source ERP and CRM web software for business
uniCenta oPOS - dynamically evolving POS project
Calculates income tax form entries, helps do your taxes.
Free Desktop book-keeping software for small-businesses & freelancers
Free and Open Source Invoicing, Expenses & Time-Tracking
SME Accounting package, General Ledger, Debtors, Creditors, Stock
Accounting & Best Practice Business Administration System
Free & Open Source Invoice App for Freelancers & Small Businesses
Human way of Accounting
Online Accounting Software
Enterprise project management replacement for Project Server
Free, easy, personal accounting for everyone
A super simple way to create & send invoices, receive payments online
Accounts33.zip is a MS Excel VBA Software of Financial Accounting
Fast, modular open source CRM for growing businesses
Accounting system for smaller companies written in GnuCobol.
osfinancials accounting and business processing software
A full ERP system - moved to GitHub. See full description for details.