Twenty is a modern SaaS CRM focused on pipeline visibility and automation. Looking for self‑hosted, open‑source options that give you full control over data, customization, and cost? Below are 20 leading open‑source CRM platforms you can evaluate as alternatives to Twenty.
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A fully‑featured fork of SugarCRM CE offering sales, marketing, and support modules with extensive customization.
Lightweight, entity‑centric CRM with a clean UI, workflow automation, and a robust API for extensions.
Enterprise‑grade CRM/ERP with advanced workflow, AI‑assisted lead scoring, and multi‑company support.
All‑in‑one sales, marketing, and help‑desk solution with a modular architecture and strong community support.
Modular suite combining ERP and CRM capabilities; easy to install and suitable for SMEs.
Open‑source ERP with a powerful CRM module for lead management, pipeline tracking, and email integration.
Feature‑rich CRM with marketing automation, sales pipeline, and a visual workflow builder.
Part of the Corteza low‑code platform; offers a flexible data model, API‑first design, and role‑based security.
Java‑based CRM with a strong emphasis on data integrity, multi‑tenant architecture, and extensibility.
Modular open‑source suite; the CRM app provides lead capture, pipeline management, and integration with sales modules.
Open‑source marketing automation platform with built‑in contact management and lead scoring.
Legacy open‑source version of Vtiger offering core sales, marketing, and support features.
Simple, self‑hosted CRM built with Node.js; includes contact management, pipelines, and email sync.
Minimalist PHP‑based CRM focused on quick lead entry and basic pipeline visualization.
Robust CRM built on the Symfony framework, offering advanced segmentation, reporting, and integration capabilities.
Free self‑hosted version of Bitrix24 providing contact management, sales funnel, and collaboration tools.
Community‑maintained Docker image of HubSpot’s free CRM, enabling on‑premise deployment for data sovereignty.