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