Composity ERP is described as 'affortable ERP solution to manage your core business processes like sales, inventory, operations, and financial performance within one complete software system' and is an website in the Business & Commerce category. There are more than 10 alternatives to Composity ERP, not only websites but also apps for a variety of platforms, including Windows, Mac, iPhone and Android. The best alternative is ERPNext, which is both free and Open Source. Other great sites and apps similar to Composity ERP are Odoo (Freemium, Open Source), insightly (Freemium), Teamleader (Paid) and Millennium Business Suite Anywhere (Free, Open Source).
ERPNext is a free and open-source integrated Enterprise Resource Planning (ERP) software developed by Frappé Technologies Pvt. Ltd. and is built on MariaDB database system using a Python based server-side framework.
Odoo (formerly OpenERP) is a suite of open-source business apps written in Python and distributed under the AGPL license, under the Open Core software business model. It is used by 2 million users worldwide to manage companies of all size.
Millennium Business Suite Anywhere (BSA) is web based ERP/CRM solution with integrated BPM. Millennium BSA automates resources' planning (MRPII), distribution, inventory, payroll, HR, purchase, sales. Millennium BSA is distributed under GPL V2.
SAP Business Suite is a set of integrated business applications that help large or midsize companies execute business and IT strategies with services-enabled technology for comprehensive business process support, reporting, and analytics for all industries.