Atomic CRM is described as 'Open-source framework for personalized CRMs. Out of the box, it provides everything you need to manage contacts, notes, tasks, and deals – the essential features of any CRM. Plus, it comes with inbound email support, single sign-on (Google, Microsoft, Auth0, and' and is a CRM system in the office & productivity category. There are more than 10 alternatives to Atomic CRM for a variety of platforms, including Web-based, SaaS, Self-Hosted, Android and iPhone apps. The best Atomic CRM alternative is Odoo, which is both free and Open Source. Other great apps like Atomic CRM are ERPNext, HubSpot, Adobe Commerce and Twenty CRM.