- [OFBiz](https://ofbiz.apache.org/) - FOSS enterprise resource planning system with a suite of business applications flexible enough to be used across any industry. ([Source Code](https://svn.apache.org/viewvc/ofbiz/)) `Apache-2.0``Java`
- [Tryton](https://www.tryton.org/) - Free open source business solution. ([Demo](https://www.tryton.org/download.html), [Source Code](https://hg.tryton.org/)) `GPL-3.0``Python`
- [YetiForce](https://yetiforce.com/en/) - Opensource CRM ERP with sales, marketing, accounting, HR, Support, Logistics and GDPR support. ([Demo](https://gitstable.yetiforce.com/), [Source Code](https://github.com/YetiForceCompany/YetiForceCRM)) `YetiForce Public License 5.0``PHP`