* [Galette](http://galette.eu/dc/) - Galette is a membership management web application towards non profit organizations ([Source code](http://git.tuxfamily.org/galette/galette.git/)) `GPLv3``PHP`
* [GLPI](http://www.glpi-project.org/spip.php?lang=en) - GLPI is an IT assests/resources/inventory manager ([Source code](https://forge.glpi-project.org/projects/glpi)) `GPLv2``PHP`
* [GRR](http://grr.devome.com/?lang=en) - Assets management and booking for small/medium companies ([demo](http://grr.devome.com/demo/week_all.php?year=2015&month=07&day=28&area=94), _administrateur/azerty_) `GPLv2``PHP`
* [Inventaire](https://inventaire.io/welcome) - collaborative resources mapper project, while yet only focused on exploring books mapping with wikidata and ISBNs ([Source code](https://github.com/inventaire/inventaire)) `AGPLv3``Nodejs`
* [InvoicePlane](https://invoiceplane.com/) - Manage quotes, invoices, payments and customers for your small business. ([Demo](https://demo.invoiceplane.com), [Source code](https://github.com/InvoicePlane/InvoicePlane)) - `MIT`
* [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](http://www.koha-community.org/) - fully featured, scalable library management system (integrated library system - ILS). ([Source code](https://github.com/Koha-Community/Koha)) `GPLv3``Perl`