Odoo is a suite of web based open source business apps.

The main Odoo Apps include an Open Source CRM, Website Builder,
eCommerce, Warehouse Management, Project Management, Billing &
Accounting, Point of Sale, Human Resources, Marketing, Manufacturing,
Purchase Management, ...

Odoo Apps can be used as stand-alone applications, but they also
integrate seamlessly so you get a full-featured Open Source ERP
when you install several Apps.

how-to run:
python3 odoo-bin -r <user> -w <password>

will listen by default on localhost:8069.