* [Tryton](http://www.tryton.org/) - Core base of a complete business solution (ERP). ([Demo](http://demo.tryton.org) admin/admin, [Source Code](https://hg.tryton.org)) `GPLv3``Python`
* [Koha](https://koha-community.org/) - Fully featured, scalable library management system (integrated library system - ILS). ([Source Code](https://github.com/Koha-Community/Koha)) `GPLv3``Perl`
* [StockazNG](https://dev.sigpipe.me/dashie/StockazNG) - Asset Management System `MIT``Python`