Open-source Extensiv 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.

metasfresh is a responsive, free, open-source ERP system aimed at companies in industry and trade. It covers wide and detailed business functionality, with topics listing manufacturing, accounting, and CRM, and it focuses on fast, easy-to-use enterprise software with a good user experience. The input does not state a license.

The architecture has three tiers: a Java back end built on Spring Boot with PostgreSQL, a REST API, and a web front end developed with HTML5, ReactJS, and Redux. A stable release is published every Friday, with a short break at the end of the year, and it can be installed through Docker or an Ubuntu installer package.

The project is aimed at mid-sized businesses that need scalability and flexibility and prefer to run their ERP on their own infrastructure. It suits companies looking for an open-source alternative to commercial ERP suites, especially those with in-house IT or a service partner able to implement and maintain it.

iDempiere is an open-source business suite that combines enterprise resource planning, customer relationship management and supply chain management, with manufacturing and point-of-sale topics listed in its description. It is developed by a global community of SMEs, implementors and end users.

Technically it is built on Java with a ZK web UI, with PostgreSQL or Oracle as the database foundation, and a modular architecture whose plugin system is powered by OSGi. Its business logic evolved from ADempiere and Compiere. The project offers live cloud test sites so you can try it without installing, an official installation guide for local setups, and community channels including a Google Groups forum and a Mattermost chat.

Bugs and feature requests are first discussed in the forums and then filed in a JIRA tracker, and continuous integration runs on Jenkins. iDempiere's repository license is listed as Other, so check the project's terms, and you run it on your own infrastructure.

OMS-ERP is an omni-channel business middle-platform from the Chinese vendor Feiji Technology (Xiamen), with documentation in Chinese. It pulls orders from marketplaces such as JD, Taobao, Tmall, Douyin and Pinduoduo, converts them into internal orders, and links the order, procurement, inventory and finance centers so that order, stock and financial data stay consistent. It targets retailers and brands that want to replace scattered e-commerce and ERP tools with a platform they own.

Technically it is a Spring Cloud microservice system designed for Kubernetes, with multi-tenant support, Zeebe and Activiti workflow engines and customizable reports. Common components such as Redis, MyBatis, saga-based distributed transactions, distributed locks and search are packaged as reusable services so teams can extend the platform themselves. The repository lists topics including OMS, WMS, TMS, CRM and ERP.

The code is published under the Apache-2.0 license, though the README's installation and usage sections are still empty. The vendor's website describes its business model as full source code delivery, local or private cloud deployment, documentation, customization and training, with a commercial license certificate offered as an added service. Contact the vendor for editions and pricing.