Twenty CRM is described as 'Contemporary Customer Relationship Management tool that combines the flexibility of open-source software with advanced features and a streamlined design. This CRM solution encourages its users to participate as co-creators, fostering an open-source collaboration' and is a CRM system in the business & commerce category. There are more than 50 alternatives to Twenty CRM for a variety of platforms, including Web-based, Windows, SaaS, Android and iPhone apps. The best Twenty CRM alternative is Odoo, which is both free and Open Source. Other great apps like Twenty CRM are ERPNext, Bitrix24, EspoCRM and Pipedrive.