Software development is no longer a solo effort. Every modern digital product is built on the work of thousands of developers worldwide. Thanks to open source, we can build faster, smarter, and more sustainably without having to reinvent the wheel every time. At Leukeleu, we have worked with open source technology since the very beginning. Not because it is free, but because it is the best way to build business-critical applications that are built to last.
What does open source actually mean?
Open source literally means open source code. The building blocks of a software project are publicly available so anyone can view, improve, and reuse them under clearly defined licensing terms. This does not mean your application automatically becomes open source. The code we develop specifically for your organization remains your property.
We use open source frameworks, tools, and libraries as a foundation and build your unique solution on top of that.
Put simply, we build on the shoulders of giants and add something new that fits your organization perfectly.
Why this is good news for you
- No vendor lock-in: You are not dependent on a single supplier or closed platform. Your application remains transparent, extendable, and transferable, both now and in the future.
- Proven technology: The tools we use (such as Python, Django, Vue.js, and Nuxt) are used worldwide and continuously improved. You directly benefit from the expertise, innovation, and security audits of thousands of developers.
- No expensive licenses: No hidden license fees or forced upgrades. Your investment goes entirely toward valuable development, not toward monthly license bills.
- Sustainable and future-oriented: Open source projects often have a longer lifespan than commercial alternatives. They continue to evolve thanks to active communities, even if a supplier disappears.
How we handle licenses
Open source does not mean anything goes. Each library or component has its own license, such as MIT, Apache 2.0, or GPL, which defines how the code may be used and shared. At Leukeleu, we take this seriously. We review all components for license terms and compatibility with your project. This ensures you stay fully compliant and avoid any risk of unintentionally exposing sensitive business code.
Why we are enthusiastic about open source
For us, open source is more than a development strategy. It is a philosophy. It is about sharing knowledge, working together, and continuous improvement. We actively contribute to the projects we use and have developed our own open source tools, which we make available to our clients.
These contributions benefit not only the community, but also you. Every improvement, bug fix, or optimization we make to an open source project ultimately benefits your application as well, without additional costs or licenses.
Building smarter, together
Open source is the driving force behind modern software development. It enables us to innovate more quickly, work more transparently, and create solutions that truly belong to the client rather than the supplier.
At Leukeleu, we believe this is the only sustainable way to build software: secure, fair, and collaborative.