EspoCRM is described as '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' and is a very popular CRM system in the business & commerce category. There are more than 100 alternatives to EspoCRM for a variety of platforms, including Web-based, Windows, SaaS, Android and iPhone apps. The best EspoCRM alternative is Odoo, which is both free and Open Source. Other great apps like EspoCRM are ERPNext, HubSpot, Salesforce and Microsoft Dynamics 365.