This is a list of free and open source business software (Financial-accounting, Enterprise Resource Planning, project management software, Customer relationship management...).


- GnuCash

GnuCash is personal and small-business financial-accounting software, freely licensed under the GNU GPL and available for GNU/Linux, BSD, Solaris, Mac OS X and Microsoft Windows.

Designed to be easy to use, yet powerful and flexible, GnuCash allows you to track bank accounts, stocks, income and expenses. As quick and intuitive to use as a checkbook register, it is based on professional accounting principles to ensure balanced books and accurate reports.

Feature Highlights:

  • Double-Entry Accounting

  • Stock/Bond/Mutual Fund Accounts

  • Small-Business Accounting

  • Reports, Graphs

  • QIF/OFX/HBCI Import, Transaction Matching

  • Scheduled Transactions

  • Financial Calculations


- FrontAccounting

FrontAccounting (FA) is a professional web-based Accounting system for the entire ERP chain written in PHP, using MySQL. FA is multilingual and multicurrency.

  • Purchase Orders

  • Goods Receivable Notes

  • Supplier Invoices/Credit Notes

  • Payments

  • Allocations

  • Accounts Payable

  • Items and Inventory

  • Stock

  • Manufacturing

  • Fixed Asset    

  • Sales Orders

  • Customer Invoices/Credit Notes

  • Deposits

  • Allocations

  • Accounts Receivable

  • Dimensions

  • General Ledger with Budget

  • Languages

  • Currencies

  • Several Companies


- iDempiere

iDempiere. Community Powered Enterprise, also known as OSGi + ADempiere, is an open source Enterprise Resource Planning (ERP) software that is fully navigable on PCs, tablets and smartphones, it has also customer relationship management (CRM) and supply chain management (SCM) functions. It is in contrast to proprietary or most other open source ERP solutions driven only by a community of supporters. 

The architecture of the iDempiere system allowing it to easily expand its functions while maintaining a simple and flexible state of the ERP business system, iDempiere can be used freely and it supports:

  •     Multiple tenants

  •     Multiple organizations (branches, plants, etc.)

  •     Multiple languages (29 localizations; mixed access in a single installation is possible)

  •     Multiple currencies

  •     Multiple account schemas

  •     Multiple-user


- Grisbi finance manager

Grisbi is developed with a simple and consistent view of your accounting in mind. Transactions lists, trees, tabs, nearly everything is customizable in order to adapt to your use. Rookie or expert, your choice!


  • Simple entry accounting

  • Multi-platforms

  • Multi-currencies

Grisbi is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.


- ProjectLibre

ProjectLibre is the leading open source alternative to Microsoft Project. It has been downloaded over 4,300,000 times in over 200 countries and has won InfoWorld "Best of Open Source" award. ProjectLibre is compatible with Microsoft Project 2003, 2007 and 2010 files. You can simply open them on Linux, Mac OS or Windows. Watch a Demo

ProjectLibre key features:

  •  Compatibility with Microsoft Project 

  •  Gantt Chart

  •  Network Diagram

  •  WBS/RBS charts

  •  Earned Value Costing

  •  Resource Histograms 

The goal of ProjectLibre is to provide free and open source project management software around the world.  We are very pleased to have been adopted in over 200 countries and making a difference around the world. Large Fortune 500 companies, governments, small business and non-profits around the world are benefiting.  ProjectLibre can open existing Microsoft Project files and has comprehensive project management features.


- WebERP

webERP is a complete web based accounting and business management system that requires only a web-browser and pdf reader to use. It has a wide range of features suitable for many businesses particularly distributed businesses in wholesale, distribution and manufacturing. When combined with a 3rd party interactive desktop Point Of Sale system it can also form the hub of a dispersed multi-branch retail management system. A fully integrated webSHOP is also available as a 3rd party add-on. webERP is as an open-source application and is available as a free download to use with all the PHP code written in an accessible way for you to add your own features as needed.

There are thousands of downloads every month. The extraordinary growth of webERP adoption has been entirely through word of mouth testimony - there has never been a marketing or advertising push to "sell" webERP. Of course there are no funds nor commercial incentive to do so for free software. This growth is built on reputation and solid practical functionality that works as tried and tested by an increasing number of businesses.

There are 33 different language translations available all included in the archive with users all over the world.


- Dolibarr

Dolibarr ERP CRM is an open source, free software package for small and medium companies, foundations or freelancers. It includes different features for enterprise resource planning (ERP) and customer relationship management (CRM) but also other features for different activities.

There are several feature modules that can be enabled or disabled, as needed. This software is free under GNU General Public License 3.0. It is a web-based application, and can therefore be used wherever an internet service is available. Dolibarr aims to offer free open source ERP and CRM features for people with no technical knowledge, by providing a simple solution.

Dolibarr includes all the important features of an ERP CRM suite. It is modular and is thus characterized by its ease of installation and use, despite the large number of features.


- Fat Free CRM

An open source CRM designed to be highly customizable; elegant in simplicity. Ruby on Rails-based customer relationship management platform. Out of the box it features group collaboration, campaign and lead management, contact lists, and opportunity tracking.

The project goal is to spur CRM innovation by providing clean code base that can be easily extended by developers. Check it out and fork away!


- EspoCRM

EspoCRM is a free open-source web application that allows you to see, enter and analyze your company’s relationships with customers and partners alike. Lightning fast and easily customizable, this web-based CRM solution will provide you with the tools to understand your consumers’ behavior and cater your products and services specifically to their needs.

The intuitive and easy-to-navigate interface allows for a seamless integration in a variety of fields and provides you with the opportunity to review and evaluate people, companies, projects, and opportunities. By analyzing the interactions between your company and your clients, EspoCRM provides you with insights into your customers’ behaviors and offers you solutions to improve your products and services range. Improve your relationships, boost your revenues and remain on top of your game with the free EspoCRM!

Self-hosted (on-premise) — You install the software and have all the data stored on your own server. All the server maintenance, as well as data security, will be your responsibility.


- Mautic

The website is owned and maintained by Mautic Inc., an Acquia company, the world’s only open marketing cloud. Mautic enables brands to integrate and personalize all their digital properties and channels into a seamless customer experience. With it’s modern approach to marketing automation, Mautic’s suite of tools enables marketers to deliver higher performing campaigns and content, and achieve superior results.

Cutting edge marketing automation empowered by open source technology.This is the future; Mautic is leading the way.

The concept of marketing automation is not a new idea and the general idea of automated marketing is one which most are familiar with, though the terminology may be different. Here’s a very brief overview: Marketing Automation is a platform for saving time, eliminating errors, and improving efficiency for a wide range of marketing tasks across multiple channels.


- Dia

Dia is a GTK+ based diagram creation program for GNU/Linux, MacOS X, Unix, and Windows, and is released under the GPL license.

Dia is roughly inspired by the commercial Windows program 'Visio,' though more geared towards informal diagrams for casual use. It can be used to draw many different kinds of diagrams. It currently has special objects to help draw entity relationship diagrams, UML diagrams, flowcharts, network diagrams, and many other diagrams. It is also possible to add support for new shapes by writing simple XML files, using a subset of SVG to draw the shape.

It can load and save diagrams to a custom XML format (gzipped by default, to save space), can export diagrams to a number of formats, including EPS, SVG, XFIG, WMF and PNG, and can print diagrams (including ones that span multiple pages).

Download Dia and try using it; tell us what you think of it (visit the Contact page), including to report bugs if you find them.


- ApacheOFBiz

Apache OFBiz is an open source enterprise resource planning (ERP) system. It provides a suite of enterprise applications that integrate and automate many of the business processes of an enterprise.[citation needed]

OFBiz is an Apache Software Foundation top level project.

Apache OFBiz is a framework that provides a common data model and a set of business processes. All applications are built around a common architecture using common data, logic and process components. Beyond the framework itself, Apache OFBiz offers functionality including:

  • Accounting (agreements, invoicing, vendor management, general ledger)

  • Asset maintenance

  • Catalogue and product management

  • Facility and warehouse management system (WMS)

  • Manufacturing execution / manufacturing operations management (MES/MOM)

  • Order processing

  • Inventory management, automated stock replenishment etc.

  • Content management system (CMS)

  • Human resources (HR)

  • People and group management

  • Project management

  • Sales force automation

  • Work effort management

  • Electronic point of sale (ePOS)

  • Electronic commerce (eCommerce)

  • Scrum (development) (Scrum software development support)


- Kanboard

Kanboard is a free and open source Kanban project management software.


  • There is no fancy user interface, Kanboard focus on simplicity and minimalism. The number of features is voluntary limited. 

  • The Kanban board is the best way to know the current status of a project because it's visual. It's very easy to understand, there is nothing to explain and no training is required. 

  • Drag and drop tasks between columns easily

  • You can add, rename and remove columns at any time to adapt the board to your project.

  • Limit your work in progress to be more efficient

  • Avoid multitasking to stay focused on your work. When you are over the limit, the column is highlighted.

  • Kanboard have a very simple query language that offers the flexibility to find tasks in no time. Apply dynamically custom filters on the board to find what you need. Search by assignees, description, categories, due date, etc.

  • Tasks, subtasks, attachments and comments

  • Automatic actions

  • Don't repeat yourself!, Automate your workflow with automated actions. Stop doing again and again the same thing manually. Change automatically the assignee, colors, categories and almost anything based on events.

  • Translated in 30+ languages


- HomeBank

HomeBank is a free software (as in "free speech" and also as in "free beer") that will assist you to manage your personal accounting. It is designed to easy to use and be able to analyse your personal finance and budget in detail using powerful filtering tools and beautiful charts. If you are looking for a completely free and easy application to manage your personal accounting, budget, finance then HomeBank should be the software of choice.

HomeBank also benefits of more than 22 years of user experience and feedback, and is translated by its users in around 56 languages.

It is available on most common devices and operating systems, such as Microsoft Windows, GNU/Linux, FreeBSD, and was ported by 3rd party to MacOSX, and Nokia.


- MetasFresh

Metasfresh gives you the maximum freedom of choice by letting you pick the way you want to run, host, support and extend your own ERP system. You can either self-host and self-support it, pick a hosting option or have a professional partner deliver you a turnkey solution. It is your own personal choice – because it is your ERP!

Pricing and Services: Self-Hosted - FREE FOREVER (All Features + Releases)


- OpenProject

The leading open source project management software.

OpenProject is a web-based project management system for location-independent team collaboration. This open-source application is released under the GNU General Public License Version 3 and available as a community edition and chargable Enterprise Edition. The continuously developed is mostly done by a company called OpenProject GmbH.

In addition to numerous smaller OpenProject installations, there are also some very large installations in global organizations with more than 2,500 projects.


  • Project management and milestones

  • Issue management

  • Bug tracking

  • Project timelines

  • Wiki

  • Document management

  • Forum

  • Time tracking

  • Project news

The OpenProject Foundation was established by OpenProject’s developers and users in October 2012. The association provides an organizational framework for technical decisions and the propagation, acceleration and perpetuation of development by the worldwide community and by a full-time development team, funded by the members of the OpenProject Foundation.