Accounting GitHub Repositories (2026) · Open Source Tools

Free and Open Source Enterprise Resource Planning (ERP)

Firefly III: a personal finances manager

💵 Independent financial accounting with intelligent reporting, alternative to Quickbooks, Xero, Wave.

Dolibarr ERP CRM is a modern software package to manage your company or foundation's activity (contacts, suppliers, invoices, orders, stocks, agenda, accounting, ...). it's an open source Web application (written in PHP) designed for businesses of any sizes, foundations and freelancers.

Ever® Gauzy™ - Open Business Management Platform (ERP/CRM/HRM/ATS/PM) - https://gauzy.co

Servidor MCP fiscal brasileiro: CNPJ, NF-e, NFS-e, CT-e, SPED, eSocial, Simples Nacional, Reforma 2026. 44 tools, zero-cadastro, tabelas offline. Python.

All in One PSA for MSPs, which Unifies client, contact, vendor, asset, license, domain, ssl certificate, password, documentation, file, network and location management with ticketing and billing capabilities, with a client portal on the side.

Modern plain text accounting. Beancount compatible.

Ubilling is an open-source billing system designed for Internet service providers (ISPs). It provides tools for managing subscribers, handling payments and creating detailed reports. Ubilling allows control and monitoring of a wide range of network equipment and can be easily extended with custom functionality.

Free and Open Source ERP software

Free AI skills (tax rules your AI follows) for 190+ countries, with sources and review status. Written by AI-first accountants in many countries. Need cross-border work done? Hire us.

ezBookkeeping is an open source, powerful, self-hosted personal finance app that is easy to use.

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

Fast, reliable bookkeeping engine with native GIT SCM support for plain text accounting

Modern multi-tenant cloud ERP and accounting suite built with .NET 10, React 19, and Tailwind CSS v4 on Cloudflare Workers & Containers.

Selbst gehostete Buchhaltung für Freiberufler, Selbstständige, Kleinunternehmer, GmbH und UG: E-Rechnung (ZUGFeRD, XRechnung), Belege, Bankabgleich, EÜR oder Bilanz, E-Bilanz und Steuererklärungen an ELSTER. Für die GoBD gebaut, DATEV-Export. Open-Source-Alternative zu Lexware Office (lexoffice) und sevDesk. Docker-Image für den eigenen Server.

💰 Double-entry bookkeeping made easy — plain-text accounting for humans and AI agents. Polished iOS & Android app built with React Native + Expo.

Go Money is a opensource personal finances manager

EBICS client for Ruby

Plain-text accounting for Beancount on Android. Runs the real Beancount and Fava on your phone. No account, no telemetry.