Odoo, formerly known as OpenERP, is an open-source business application suite developed in Python under the AGPL license. It follows the Open Core software business model and serves a global user base of 2 million.

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.

Dolibarr ERP & CRM is a modern and easy to use open-source web software package to manage your business (customers, invoices, orders, products, stocks, agenda, e-mailings, shipments...).

A comprehensive platform offering marketing automation, email and SMS campaigns, chat, CRM, Facebook Ads integration, and custom API. Supports major e-commerce platforms and CMS tools, with pricing based on email volume.

FileMaker is a cross-platform relational database application. It integrates a database engine with a graphical user interface and security features, allowing users to modify the database by dragging new elements into layouts, screens, or forms.

Replace a multitude of services and apps with a single ecosystem for your business to work in. Explore the tools of Bitrix24.

Intuit QuickBooks is an accounting software with financial management tools like payroll management, live bookkeeping, and flexible accounting plans for all business sizes. It provides record-keeping, reporting, inventory management, and integrates with over 750 apps.

EspoCRM is an Open Source CRM (Customer Relationship Management) software that allows you to see, enter and evaluate all your company relationships regardless of the type. People, companies, projects or opportunities. Written in PHP and JavaScript.

Pipedrive is a sales pipeline management tool, mostly used by small demanding teams. It organizes your leads in a way you'll always have a great overview of sales, and important deals won't get dropped.

Tryton is a three-tiers high-level general purpose application platform under the license GPL-3 written in Python and uses PostgreSQL as database engine. It's the core base of a business solution providing modularity, scalability and security.

Insightly is a web-based application that serves as a project management tool and a Customer Relationship Management (CRM) system. It integrates with Google Apps through a Gmail gadget and supports Google Docs.

The intelligent CRM startups and small businesses love to use.