Open Source - Bitrix24

While you get code access with the On-Premise version, it remains commercial software. You must pay substantial licensing fees to legally access and use it.

| Software | License | Best For | Key Differentiator | | :--- | :--- | :--- | :--- | | | LGPL | Businesses needing an all-in-one ERP and CRM platform. | Extremely modular with hundreds of official apps (e.g., accounting, inventory, HR). | | SuiteCRM | AGPL | Large enterprises requiring a scalable, feature-rich CRM framework. | Forked from the popular SugarCRM, offering robust reporting and workflow capabilities. | | EspoCRM | GPLv3 | Small to mid-sized teams wanting a flexible, easy-to-use CRM. | Highly customizable data structure (entities, fields, relationships) and a clean user interface. | | Redmine | GPLv2 | Project management-focused teams needing deep issue tracking. | A mature, flexible, and extensible project management web app with Gantt charts and time tracking. | | Dolibarr | GPLv3 | Small businesses, freelancers, and foundations . | Simple, modular one-ERP-with-CRM suite known for its ease of use. | | OpenProject | GPLv3 | Teams using classic, agile, or hybrid project management styles. | Strong support for Scrum and robust data protection features. |

The reality of Bitrix24's source code model is slightly different, but arguably more powerful for enterprises. While Bitrix24 is not a pure open-source platform, its On-Premise (Self-Hosted) edition provides full source code access. This unlocks total control over your data, UI, and business logic.

Companies with 50+ users who need tailored workflows. bitrix24 open source

Gantt charts, Kanban boards, and time tracking.

Bitrix24 is built on a proprietary PHP framework called the Bitrix Framework. It uses a standard web development stack, typically running on an environment configured with:

to match branding completely.

Requirement for on-premise hosting.

❌ : Requires proper server infrastructure and IT expertise to maintain optimal performance.

These are (MIT or Apache), but they are not the Bitrix24 application — just peripheral tools. While you get code access with the On-Premise

Bitrix24 is a comprehensive business workspace that consolidates multiple tools into one ecosystem: www.bitrix24.com Bitrix24 - Free online workspace for your business

❌ : Significant upfront license costs compared to cloud subscriptions, plus infrastructure expenses.

| Tool | Focus | Key Features | License | | :--- | :--- | :--- | :--- | | | Flexible project management | Ruby on Rails framework, cross-platform, cross-database | Open Source | | Odoo | Complete business suite | ERP, CRM, e-commerce, 260+ core modules in Python | Open Source (Freemium) | | OpenProject | Project management | Gantt charts, issue tracking, Scrum support, document management | GPL-3.0 | | Huly Platform | All-in-one team platform | Chat, Project Management, CRM, HRM, ATS, fully self-hostable via Docker | Open Source | | ONLYOFFICE Groups | Collaboration suite | Document management, projects, CRM, email, fully open source | Open Source | | Extremely modular with hundreds of official apps (e

Bitrix24's core strength is being an "all-in-one" suite. It aims to replace standalone tools like Slack for communication, Asana for project management, and a separate CRM, all within a single, unified platform.

The open-source edition of Bitrix24 includes many of the same features as the proprietary version, such as: