Building a CRM from scratch sounds exciting. In reality, it is a long journey filled with hard decisions, dead ends, and moments of doubt. Over three years, we questioned our approach more times than we can count. It would have been easier to adapt an existing solution. But easier was never the goal. This is how Defalto was built.
Fifteen Years Before the First Line of Code
Defalto did not start from zero experience.
Before writing a single line of Defalto code, we spent more than 15 years implementing, customizing, and developing open source CRM systems for real businesses. Most of that time was dedicated to working with vtiger — one of the most widely used open source CRMs.
Those years gave us a deep understanding of how CRM systems are used in practice. We saw what works well, what scales, and where teams struggle once the system becomes part of daily operations.
That experience became the foundation for everything that followed.
Why Starting from an Existing System Was Not Enough
Using vtiger as a base was the natural first step. We knew the system inside out — from database structure to business logic. But we also knew its limits.
Over time, the same issues appeared again and again:
- a non-modern user interface that was hard to adapt to today’s expectations
- a calendar module that did not reliably support real scheduling workflows
- outdated PHP technology that made long-term development harder
- legacy scripts and architectural decisions that slowed innovation
Instead of patching around these limitations, we made a bigger decision: to build a new CRM platform that keeps the strengths of open source, but removes the technical and UX debt.
That decision led us, once again, to open source — not as a feature, but as a core philosophy.
Year One: Building the Invisible Foundation
The first year was the least visible and the most critical. We focused on architecture, modern technology choices, and a clean data model designed for long-term growth.
Every decision was influenced by years of real-world CRM implementations. How do you avoid rigid structures? How do you allow customization without breaking the core? How do you prepare a system for modern interfaces and integrations?
Many things were rewritten. Some ideas were abandoned completely. That year shaped Defalto more than any feature ever could.
Year Two: Real Users, Real Feedback
In the second year, Defalto reached real users. This is where theory meets reality.
Modules evolved based on actual workflows, not assumptions. The interface was refined to feel modern, clear, and efficient. Scheduling and activity management were redesigned from the ground up — especially areas where legacy CRM systems traditionally struggle.
The open source foundation allowed fast iteration and deep customization without artificial limits.
Year Three: Stability, Performance, and Trust
The third year focused on stability. Less visible innovation, more reliability. Performance optimization, security hardening, and UX consistency became priorities.
Defalto became what it was always meant to be: not just a CRM product, but a flexible platform built for companies that want control over their tools and data.
Why We Would Do It Again
Building a CRM from scratch is not the fastest path. But after more than 15 years in the open source CRM world, it was the right one.
Defalto exists because we believe CRM systems should evolve with businesses — not trap them in outdated technology or fixed workflows. And that belief is embedded in every layer of its open source foundation.
