ERPNext is a free and open-source integrated Enterprise Resource Planning software. It is a generic ERP software used by manufacturers, distributors and services companies.

SugarCRM is an open source customer relationship management system with following functionalities - marketing campaigns, sales-force automation, customer support, collaboration, Mobile CRM, Social CRM and reporting.

Zammad is a web based open source helpdesk/customer support system with many features to manage customer communication via several channels like telephone, facebook, twitter, chat and e-mails.

VTiger is a cloud-based CRM that enables businesses to deliver customer experiences by breaking barriers between their marketing, sales, and support teams.

HubSpot is a CRM platform that brings everything scaling companies need to deliver a best-in-class customer experience into one place. Our crafted, not cobbled solution helps teams grow with tools that are powerful alone, but better together.<br />With HubSpot, customers come first, customization is simple, and teams are connected through a unified CRM.<br />HubSpot offers a better solution that’s crafted, not cobbled. We built our entire platform in-house so our customers can benefit from software that’s cohesive, customizable, and easy to adopt. With a single source of truth, your teams can form deeper relationships with customers throughout their journey. And when the customer is at the center of every business decision, company-wide alignment is a whole lot easier.

InvoicePlane is a free and open source CRM application which is used to manage users quotes, invoicing, payments and customer relations.

Odoo is business management software including CRM, e-commerce, billing, accounting, manufacturing, warehouse, project management, and inventory management.

Sentrifugo is a free and powerful new-age Human Resource Management System that can be easily configured to adapted to organizational processes. It features HR, leave mngt, time mngt, acquisitions, analytics and other functionalities.

OrangeHRM is a comprehensive Human Resource Management (HRM) System that captures all the essential functionalities required for any enterprise.

OpenProject is a web-based project management system for location-independent team collaboration.

Helpy is an open source customer support platform designed for companies which take care of customer data security and control