category

Open Source Finance & Accounting Tools

Open source finance & accounting tools

projects 36 combined stars ★ 174K refresh nightly
Finance & Accounting is one of the most active slices of the open source world — the 15 projects below are ranked by GitHub stars, which makes this page roughly a community-voted shortlist rather than a vendor-curated catalogue. Every card shows the license and the last-commit date, so you can filter out the two failure modes of free software in one glance: restrictive licensing that blocks your use case, and abandonment that leaves you maintaining a fork. When two projects look comparable, prefer the one with more recent activity and the more permissive license (MIT/Apache-2.0 over AGPL) unless copyleft specifically serves your goals. Hover into any project for its full README — the documentation quality is usually the honest tell of engineering quality.

All Finance & Accounting tools

ERPNext ★ 41K

Comprehensive business management, tailored for you

rank001 licenseGPL-3.0 written inPython typeFinance & Accounting
Midday ★ 15K

Streamline your business finances and operations

rank002 licenseAGPL-3.0 written inTypeScript typeFinance & Accounting
aureuserp ★ 12K

Free and Open Source ERP platform

rank003 licenseMIT written inPHP typeFinance & Accounting
Lago ★ 11K

Transform complex usage data into accurate, real-time billing

rank004 licenseAGPL-3.0 written inGo typeFinance & Accounting
Invoice Ninja ★ 10K

Send invoices, accept payments, manage your business—all free

rank005 licenseNOASSERTION written inPHP typeFinance & Accounting
Polar ★ 10K

Modern payment infrastructure for digital products and SaaS

rank006 licenseApache-2.0 written inPython typeFinance & Accounting
Akaunting ★ 10K

Free online accounting for small businesses and freelancers

rank007 licenseNOASSERTION written inPHP typeFinance & Accounting
idurar-erp-crm ★ 8.9K

Free Open Source ERP CRM Software Accounting Invoicing | Node.Js React

rank008 licenseAGPL-3.0 written inJavaScript typeFinance & Accounting
TaxHacker ★ 6.8K

Self-hosted AI accounting app. LLM analyzer for receipts, invoices, transactions with custom prompts and categories

rank009 licenseMIT written inTypeScript typeFinance & Accounting
Expensify ★ 5.1K

Simplify expense management for businesses of all sizes

rank010 licenseMIT written inTypeScript typeFinance & Accounting
hledger ★ 4.8K

Robust, fast, intuitive plain text accounting tool with CLI, TUI and web interfaces.

rank011 licenseGPL-3.0 written inHaskell typeFinance & Accounting
personal-management-system ★ 4.2K

Your web application for managing personal data.

rank012 licenseMIT written inPHP typeFinance & Accounting
rotki ★ 4.1K

A portfolio tracking, analytics, accounting and management application that protects your privacy

rank013 licenseAGPL-3.0 written inPython typeFinance & Accounting
Bigcapital ★ 4.0K

Automate financial processes for smarter business decisions

rank014 licenseAGPL-3.0 written inTypeScript typeFinance & Accounting
paisa ★ 3.2K

Paisa – Personal Finance Manager. https://paisa.fyi demo: https://demo.paisa.fyi

rank015 licenseAGPL-3.0 written inTypeScript typeFinance & Accounting
Autumn ★ 2.8K

Stripe payments, usage tracking, and paywalls in 3 functions

rank016 licenseApache-2.0 written inTypeScript typeFinance & Accounting
Paymenter ★ 2.8K

Modern open-source billing platform for hosting businesses

rank017 licenseMIT written inPHP typeFinance & Accounting
moneymanagerex ★ 2.3K

Money Manager Ex is an easy to use, money management application built with wxWidgets

rank018 licenseGPL-2.0 written inC++ typeFinance & Accounting
ExpenseOwl ★ 1.5K

Extremely simple, self-hosted expense tracker with a beautiful UI.

rank019 licenseMIT written inHTML typeFinance & Accounting
sossoldi ★ 1.4K

"Sossoldi" is a wealth management / personal finance / Net Worth tracking app, made with Flutter.

rank020 licenseMIT written inDart typeFinance & Accounting
django-ledger ★ 1.4K

Django Ledger is a double entry accounting system and financial analysis engine built on the Django Web Framework.

rank021 licenseGPL-3.0 written inPython typeFinance & Accounting
Meteroid ★ 1.4K

Flexible billing infrastructure for modern SaaS

rank022 licenseAGPL-3.0 written inRust typeFinance & Accounting
Invio ★ 1.2K

Self-hosted invoicing without the bloat.

rank023 licenseUnlicense written inTypeScript typeFinance & Accounting
itflow ★ 1.0K

All in One PSA for MSPs, which Unifies client, contact, vendor, asset, license, domain, ssl certificate, password, documentation, file, network and location man

rank024 licenseGPL-3.0 written inPHP typeFinance & Accounting
SolidInvoice ★ 980

Simple and elegant invoicing solution.

rank025 licenseMIT written inPHP typeFinance & Accounting
OpenBudgeteer ★ 974

OpenBudgeteer is a budgeting app based on the Bucket Budgeting Principle

rank026 licenseAGPL-3.0 written inC# typeFinance & Accounting
budget-board ★ 896

A simple app for tracking monthly spending and working towards financial goals.

rank027 licenseAGPL-3.0 written inC# typeFinance & Accounting
itr-wala ★ 886

File your Indian income tax return (ITR) from your terminal. Deterministic tax engine, both regimes, AY 2026-27. Claude Code / Codex / Gemini skill.

rank028 licenseMIT written inPython typeFinance & Accounting
invoicerr ★ 733

Invoicerr is a freelance-focused invoicing app that lets you create quotes, generate invoices, track payments, and collect secure signatures.

rank029 licenseAGPL-3.0 written inTypeScript typeFinance & Accounting
Transity ★ 656

Keep track of your 💵, 🕘, 🐖, 🐄, 🍻 on your command line with the plain text accounting tool of the future! 🚀

rank030 licenseAGPL-3.0 written inRust typeFinance & Accounting
TimeTracker ★ 635

Self-hosted time tracking & invoicing for freelancers and teams: timers, projects, PDF and Peppol e-invoicing. Open-source Toggl/Clockify alternative.

rank031 licenseGPL-3.0 written inPython typeFinance & Accounting
ocular ★ 577

💰 Ocular - A fancy, simplistic, beautiful and straight-forward, open-source budgeting tracking app to track your budget across the years. Easy to use, to get s

rank032 licenseMIT written inVue typeFinance & Accounting
aurelio-finance ★ 346

Self-hosted personal wealth analysis: portfolio & net-worth tracking with AI insights. FastAPI + React.

rank033 licenseMIT written inPython typeFinance & Accounting
UniBee ★ 234

Cut billing costs with open-source subscription management

rank034 licenseAGPL-3.0 written in— typeFinance & Accounting
Suprascribe ★ 11

Automatically discover hidden subscriptions from your inbox

rank035 licenseAGPL-3.0 written inTypeScript typeFinance & Accounting
Flowglad ★ 0

Cross-system automation and knowledge base for accounting firms

rank036 license— written in— typeFinance & Accounting

Frequently asked questions

How many open source Finance & Accounting tools are there?

This registry tracks 36 open source Finance & Accounting projects, with 174,025 combined GitHub stars. The list is ranked by stars and refreshed nightly.

What is the most popular open source Finance & Accounting project?

ERPNext leads this category with 40,868 GitHub stars, followed by Midday.

Are these Finance & Accounting tools free?

Yes — every project listed here is open source. Some also offer paid hosted versions alongside the free self-hosted option; the licence for each project is shown on its card.