Open-source Unit4 alternatives

Odoo is a bundle of browser-based, open-source business applications. Apps cover sales (CRM and eCommerce), a website builder, inventory and manufacturing, projects, invoicing and accounting, point of sale, human resources and marketing. It is written in Python, and GitHub lists the license as 'Other', so check the repository for the exact terms.

Each app can be used as a stand-alone application, but they are designed to work together, so installing several apps gives you a full-featured ERP system. This lets a business start with a single function, such as sales or invoicing, and add modules as its needs grow without changing platforms.

The README points to setup instructions for a standard installation, an eLearning course and a business game called Scale-up for learning the software, and developer tutorials for extending it. Odoo can be run on your own infrastructure, and the vendor's website offers commercial services. It suits small and mid-sized companies looking for an integrated business suite.

This entry points to ERPNext, the open-source enterprise resource planning system developed in the frappe/erpnext repository on top of the Frappe framework. It aims to replace the patchwork of separate programs a business often uses for invoices, stock, personnel and daily operations with a single integrated product.

Its modules include accounting for cash flow, transactions and financial reports; order management for inventory levels, replenishment, sales orders, customers, suppliers and shipments; manufacturing for production cycles, material consumption, capacity planning and subcontracting; asset management from purchase to disposal; and project delivery. Topics also list HR, CRM, procurement, retail, distribution, healthcare and support functions. It is written in Python, and a live demo is available.

ERPNext is GPL-3.0 licensed and can be self-hosted. The Frappe team also offers managed hosting, which suits companies that want the software without running servers. It is aimed at small and mid-size organizations that want an alternative to proprietary ERP suites.

Ever Gauzy is an open business management platform aimed at collaborative, on-demand and sharing-economy businesses. It brings ERP, CRM, human resource management, applicant tracking and project management together with employee time and activity tracking, and is part of the larger Ever Platform.

Main features include HR management with time tracking and performance monitoring, CRM, ERP, project and task management, sales management, financial and cost management with accounting and invoicing, and inventory, supply chain and production management. A dashboard gives an overview of metrics such as company income, expenses and employee bonuses, and the platform offers headless APIs. Topics also mention payroll, expenses and bookkeeping.

The company also builds Ever Teams, a work and productivity app in a React and React Native stack that connects to the Gauzy APIs. Gauzy is written in TypeScript and licensed under AGPL-3.0, and can be self-hosted. It suits agencies, startups and distributed teams that want to run an internal business system without paying per seat for several SaaS tools.

Dolibarr is an open-source ERP and CRM package for managing an organization's activity: contacts, suppliers, quotes, invoices, orders, stock, agenda, accounting, human resources, document management and manufacturing. It targets small, medium and large companies, foundations and freelancers.

It is a PHP web application with JavaScript enhancements, released under the GPL, version 3 or later, and can be used as a standalone application or as a web app reached over the internet or a LAN. Installation options include DoliWamp for Windows, DoliDeb for Debian and Ubuntu, DoliRpm for Red Hat family distributions, a Docker image, or a manual setup on Apache or Nginx with MariaDB, MySQL or PostgreSQL.

The project has a large community with free forums, and preferred partners offer commercial support if needed. Because it is modular, organizations switch on only the features they need. It suits small businesses and associations that want an integrated business suite they can host themselves.

Frappe Docker is the official container setup for Frappe applications. It provides Docker images, Compose configurations, and documentation for running ERPNext, Frappe CRM, Helpdesk, HRMS, and your own custom Frappe apps in containers. The repository is released under the MIT license.

You can use it to start from a quick demo setup, adopt production-ready images and Compose files, build custom app images that bundle your own code, and operate Frappe in production. The README says the repository structure covers documentation for deployment and operational workflows, along with override files that offer opinionated configuration choices.

It is aimed at system administrators and developers who deploy business software based on the Frappe framework and want a repeatable, containerized setup instead of a manual bench installation. Topics reference ERP, CRM, HR, and self-hosted business software, so it is relevant for small and mid-sized companies running ERPNext on their own servers.