Open-source Maximizer CRM alternatives

Twenty is an open-source CRM presented as an open alternative to Salesforce and designed for AI. It supplies technical teams with the components to assemble a custom CRM that adapts as the business changes, and the idea is that you build, ship and version it like the rest of your software stack.

The core building blocks are objects, views, workflows and agents, and all of them can be extended as code. A Twenty CLI scaffolds new apps, where you define objects, fields and views as code and then publish them to your workspace, with a guide covering views, agents and logic functions. For people using coding agents, the project provides official skills that work with Claude Code, Codex, Cursor and other harnesses. The stack is TypeScript with NestJS, React, GraphQL and PostgreSQL.

You can sign up at twenty.com for the managed cloud, which needs no infrastructure, or self-host with Docker Compose. The repository's license is listed as 'Other', so review it before commercial redistribution. Twenty suits teams that want a CRM they can shape in code instead of being limited by a fixed SaaS data model.

Krayin CRM, published in this repository as Laravel CRM, is a free and open-source customer relationship management system for small and medium businesses and larger organizations. It covers the customer lifecycle, from capturing leads through managing customers and sales, and is described as a hand-tailored CRM framework built on Laravel and Vue.js.

The README lists a descriptive and simple admin panel, a dashboard, custom attributes, a modular architecture and email parsing via SendGrid among its features. Developers get the benefit of building on two popular frameworks, PHP's Laravel and the progressive JavaScript framework Vue. The project provides documentation, a forum for questions and feature requests, a live demo, Docker installation instructions and a section on the Krayin Cloud system for people who prefer hosted use.

Krayin CRM is MIT licensed, so it can be self-hosted and modified freely. It suits agencies and companies that already work with Laravel and want a customizable CRM core rather than a closed SaaS product, as well as teams that want to extend the data model through custom attributes.

SuiteCRM is an open-source customer relationship management application for businesses that want control over their data and the freedom to customize their CRM. Its module list covers accounts, contacts, leads, opportunities, quotes, contracts, cases, documents, reports and workflow automation, and it supports multiple languages and currencies.

The README separates two generations of the product. SuiteCRM 7 is described as a mature and stable line with a large community and regular releases of features, security patches and fixes, while SuiteCRM 8 is the newer version that was still catching up on features at the time of writing. The project also maintains an extensions directory, a demo, a community forum and a partner network. It is written in PHP.

SuiteCRM is licensed under AGPL-3.0 and is usually installed on your own web server with a database. Managed hosting and support are available through the vendor and partners. It suits small and mid-sized businesses and agencies that want an open-source alternative to commercial CRMs.

Frappe CRM is an open-source CRM aimed at modern sales teams, and it places no limit on users. It is crafted for a clean user experience and covers core CRM activities so teams can build strong customer relationships without clutter.

The authors say the motivation was to offer a simple, customizable, open-source solution, because many existing CRMs are too complex, too generic or locked behind steep pricing. It is built on the Frappe framework with a Vue front end and Python back end, and as a Frappe app it can be extended and combined with other apps from the same ecosystem. A live demo, website and documentation are provided.

Frappe CRM is licensed under AGPL-3.0. You can self-host it, or run it on the managed Frappe Cloud platform. It suits small and mid-sized sales teams, agencies and startups that want a lightweight CRM they can adapt to their own processes.

EspoCRM is a free, open-source customer relationship management platform that helps organizations store and manage leads, contacts, sales opportunities, marketing campaigns, and support cases in one web application. The project is released under the AGPL-3.0 license and has been developed since 2014.

The front end is a single-page application backed by a REST API written in PHP, which makes it easy to integrate with other systems. Its feature areas cover sales automation, email marketing, a calendar, kanban views, documents, a customer portal, and customer-support case handling. The data model can be customized to match different business processes.

EspoCRM runs on your own server with PHP 8.3 to 8.5 and MySQL 8, MariaDB 10.6 or later, or PostgreSQL 15 or later. An online demo is available for evaluation. It suits small and mid-sized organizations that want a configurable CRM they can host and modify themselves, and the vendor also sells paid extensions and hosting.

Cordys CRM is an open-source customer relationship management system from FIT2CLOUD, written in Java and aimed at private deployment so that companies keep control of their data. The project documentation is in Chinese, and the input lists its license only as other. It is described as combining informatization, digitalization, and AI capabilities.

Its stated strengths are flexible configuration with fine-grained permissions and integration with mainstream office platforms; an open API and standard interfaces for custom development; business intelligence through the DataEase analytics engine for sales data visualization; and an open CRM Skills interface that lets AI assistants such as OpenClaw and WorkBuddy take part in tasks from lead screening to deal analysis. A built-in agent harness arrived in version 1.9.0.

Installation requires a Linux server with Docker and a one-line install script, with alternatives through the 1Panel app store or an offline package for networks without internet access. It suits Chinese-speaking companies and teams that want a self-hosted CRM with AI integration.

OroCRM is an open-source customer relationship management application built with flexibility in mind. This repository contains the sample application distribution of OroCRM Community Edition, without the commerce and marketplace modules, which can be used as is or customized to meet business needs.

The project is built on the Symfony framework and the OroPlatform, and the README explains how this distribution relates to others, including the CRM Enterprise Edition, several OroCommerce editions, German-localized versions and the bare platform application. System requirements and installation steps are covered in the online documentation, and the project website provides more information.

The README states that the code is licensed under OSL-3.0, while repository metadata lists it as other. It is written in PHP and runs on your own servers. It suits companies and developers who want a configurable open-source CRM they can extend, with the option of moving to a commercial Enterprise Edition from the same vendor.

Django-CRM is a free, open-source customer relationship management application written in Python on the Django framework. It is meant for businesses of any size or freelancers who want a self-hosted CRM with task management, mailing and analytics in one customizable platform instead of a separate SaaS tool for each job.

Core features include lead management, deal tracking and forecasting, company and contact management and role-based access control. For collaboration it adds a task manager with projects and subtasks, reminders, files and internal chat, and for marketing it provides mailing with SMTP and IMAP support, CRM email integration and email campaigns. Built-in analytics and reports cover sales and customer segments. The whole interface runs on Django Admin, with no proprietary UI layer, which makes customization and upgrades predictable.

The project describes its status as production and stable, used in real business environments for many years. It is licensed under AGPL-3.0, suits on-premises installations, and the README is available in many languages.