For over 15 years, our team worked on countless CRM implementations for small and medium-sized businesses around the world.
We lived through every major open-source CRM platform and after hundreds of projects, one thing became clear: businesses need a modern, flexible, and reliable open source CRM built for today’s challenges.
That’s how Defalto CRM was born — a new-generation, open source CRM system designed for performance, simplicity, and community.
Why we built a new open source CRM
Most legacy CRM systems started strong but grew messy over time. Outdated frameworks, inconsistent design, and complex upgrade paths made maintenance a nightmare for users and developers alike.
We decided to start from zero — keeping the open-source spirit but using modern technologies and a clean, modular structure.
The goal: build an open source CRM platform that’s actually enjoyable to use.
Three years of development, 300 tasks, and a modern architecture
After three years of development and more than 300 completed tasks, Defalto CRM offers a Bootstrap-compatible layout, PHP 8+ compatibility, and a completely redesigned interface.
Each module is lightweight and customizable, allowing small teams and developers to:
- Automate leads, emails, and workflows
- Manage quotes, invoices, and customer support
- Customize modules without heavy code dependencies
Defalto removes legacy code and complexity — giving you a fast, stable, and fully self-hosted CRM experience.
Core modules in Defalto CRM
- MailManager & MailConverter – automate your emails
- Calendar & Tasks – keep your business organized
- Products, Quotes & Invoices – complete sales management
- Service Desk – handle tickets and service contracts
- PDF Maker & Email Templates – built right in
Every module in this open source CRM software is designed for real usability, not just features on a checklist.
Built by the community, for the community
Defalto CRM is completely open source — free to use, modify, and extend.
No license fees. No vendor lock-in. Just a transparent CRM system for modern businesses.
We invite developers and agencies to join the project:
- Contribute new modules
- Translate the interface
- Share plugins or integrations
Together, we can build the most practical open source CRM for everyday business needs.
Try Defalto Open Source CRM
Defalto is more than software — it’s a community-driven project focused on accessibility, transparency, and control.
Explore Defalto Open Source CRM