LibreERP is a suite of web based open source business apps. LibreERP is a fork of Odoo Community Edition.
The main LibreERP Apps include an Open Source CRM, Website Builder, eCommerce, Project Management, Billing & Accounting, Point of Sale, Human Resources, Marketing, Manufacturing, Purchase Management, ...
LibreERP 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.