Open Source Alternative to SAP

Double-entry accounting system with a command-line reporting interface

Free and Online Accounting Software

Dolibarr ERP CRM is a modern software package to manage your company or foundation activity (contacts, suppliers, invoices, orders, stocks, agenda, accounting, ...).It's opensource software (wrote with PHP language) designed for small and medium companies, foundation and freelances. You can freely install, use and distribute it as a standalone application or as a web application to use it from every internet access and media.

3proxy - tiny free proxy server

easy-to-use command-line/curses/web plaintext accounting tool; a modern and largely compatible Haskell rewrite of Ledger

可能是中国用户数最多的开源ERP

Free Desktop book-keeping software for small-businesses and freelancers.

We do Open Source ERP - Fast, Flexible & Free Software to scale your Business.

Get a grip on your finances.

Keep track of your 💵, 🕘, 🐖, 🐄, 🍻 on your command line

An open-source ERP (Enterprise Resource Planning) solution for WordPress

A portfolio tracking, analytics, accounting and tax reporting application that respects your privacy

A double-entry accounting system for Ruby applications.

OpenAM is an open access management solution that includes Authentication, SSO, Authorization, Federation, Entitlements and Web Services Security.

Command line double-entry accounting program

Your Online Business Kit - Build your own business applications. Create your own online shop. Customize to your own needs.

An Open Sourced Invoice System developed for anyone who needs to generate out an invoice and manage clients

Repository for the LedgerSMB project -- web app for accounting & ERP

Gauzy™ - Open-Source Business Management Platform (ERP/CRM) focused on Fairness and Transparency

Synchronize your ledger-cli files with your bank.

Balance accounting (bookkeeping) system based on debit and credit principle

😌 Simple and Robust Accounting

Accounting pluggable app for Django 1.7+ projects

This repository provides everything you need to get started with Python for (social science) research.

The plaintextaccounting.org website, a portal to Ledger, hledger, beancount and co.

Sophisticated ERP, CRM, Point-Of-Sale, etc. Open source now. This system is developed since 1996.

An accounting web application to track personal finances written in Go and React/Bootstrap

An Emacs major mode for Hledger

List of all tools (apps, services) that startups should use.