Your Data, Your Control
Digital independence is not a luxury – it's a strategic necessity. We develop solutions based on proven open-source technologies that remain fully under your control.
Get a ConsultationThe Problem: Trapped in a Golden Cage
At first, the SaaS solution was convenient. Quick implementation, no server maintenance, everything from one source. But three years later, reality looks different.
Vendor Lock-in & Cost Trap
SaaS providers raise prices by an average of 11% annually. Switching costs of 150-200% of annual fees make changing vendors virtually impossible—while new terms are imposed unilaterally.
Data Sovereignty & Loss of Control
92% of Western data is stored on US servers, subject to foreign legal systems like the CLOUD Act. Companies lose control over their most valuable assets—and risk GDPR violations.
Black Box Without Customization
Proprietary software provides no access to source code. Customization is severely limited, features are dictated by the vendor and can be discontinued at any time—your workflows must adapt, not the other way around.
Your digital infrastructure doesn't really belong to you. You're just renting it – on terms that can change at any time.
What You Concretely Gain
Self-Hosted Infrastructure
Your applications run on servers you control – whether in your own data center, with a European hoster, or in a private cloud.
No third party has access to your systems. No unannounced updates. No dependency on the availability of external services.
You decide when updates are applied. You determine where your data is stored. You maintain full control over your business processes – even if a provider disappears from the market.
Open Data Formats and Standards
Your data is stored in standardized, documented formats that are not controlled by any single vendor.
You can export, migrate, or link your data with other systems at any time – without conversion problems or data loss.
If you want to switch to a better system in five years, you simply take your complete data history with you. No negotiations, no export fees, no nasty surprises.
Transparent Source Code
The complete source code of your application is viewable, auditable, and adaptable if needed.
You know exactly what the software does. Security vulnerabilities can be independently audited. Modifications are possible without manufacturer approval.
If your department needs a special feature, you can develop it yourself or have it developed – without waiting for a vendor's roadmap.
Long-term Maintainability
We exclusively use established technologies with active communities and long-term support.
No proprietary frameworks that stop being maintained after three years. No niche technologies where you can't find developers.
Even if SEADEV didn't exist tomorrow, you'd easily find other developers who can maintain and develop your system. That's real independence.
The SEADEV Philosophy: Partnership Instead of Dependency
Solid technology needs solid craft. Here's how we put open source to work for you.
Every technology we use is open source, actively maintained, and has a community of several thousand active users. This is how we ensure your system remains maintainable even in ten years.
Who Is This Right For?
Open source fits every stage of growth — from solo founders to mid-sized enterprises. The difference: your IT costs no longer scale automatically with your headcount.
Smart Start Without Subscription Traps
Solo entrepreneurs and micro-businesses often overpay for SaaS tools they barely use. With self-hosted alternatives for cloud storage, invoicing, and time tracking, you can cut your monthly software costs by up to 85% — without compromising on functionality.
Scale Without Per-Seat Penalties
Per-user pricing punishes growth: at 50 employees, basic SaaS tools alone cost around EUR 2,900 per month — and prices rise 8-11% annually. Open source has no user limits. Your team grows, your licensing costs stay flat.
Full Control, Full Compliance
GDPR, NIS2, and DORA demand verifiable data sovereignty and auditability. With self-hosted infrastructure, you meet regulatory requirements without depending on third-party vendors — while saving EUR 40,000 to 70,000 per year compared to equivalent SaaS solutions.
Ready for Digital Independence?
Digital independence begins with a conversation. We analyze your current situation, identify dependencies, and show you concrete paths to more sovereignty.
Get a ConsultationOpen source is more than a philosophy — it's a toolkit. Here are some examples of how we combine open-source tools for our clients.
AI Knowledge Base
BookStack as a documentation platform, enhanced with an AI chatbot using Ollama and LangChain. Your employees find answers in seconds — without sending data to external APIs.
Collaboration with Automation
Nextcloud as a central collaboration platform, connected with Windmill for automated workflows. Files, calendars and tasks — with processes that run themselves.
Central User Management & SSO
Keycloak as an identity provider for single sign-on across all enterprise applications. One login for everything — with full control over roles and permissions.
CI/CD & Container Deployment
GitLab for version control and CI/CD pipelines, Docker for containerization and Kubernetes for orchestration. From code commit to production deployment — fully automated.
Headless CMS & Website
Strapi as a flexible content management system, Nuxt for performant frontends and PostgreSQL as a robust database. Your website — fast, scalable and easy to maintain.
Monitoring & Alerting
Prometheus for metrics, Sentry for error tracking and OpenTelemetry for distributed tracing. You see problems before your users notice them.
Technologies we work with
... and many more