Websites & Web Apps
Websites and web apps that load fast, get found and grow with your business — from company websites to SaaS platforms.
Astro Next.js Vue.js TypeScript Tailwind CSS
// k:ey software
We build software
that lasts.
Custom web, mobile and desktop development from Germany. From architecture to deployment.
Services
What we build
Custom solutions for web, mobile, desktop and IT — carefully built, maintainable long-term, from one source.
Desktop Applications
Desktop applications based on .NET and Avalonia — offline-capable, close to the system and publishable for Windows, macOS and Linux.
.NET Avalonia Windows macOS Linux
Shopware
Shopware plugins and themes — custom-built, cleanly integrated and backed by shop setup, maintenance and ongoing support.
Shopware Plugins Themes Shop setup Maintenance
IT Infrastructure
We host client projects on our own servers in German data centres — GDPR-compliant, with self-hosted source control and professional development standards.
Servers DE Docker CI/CD GDPR Testing
AI Integration AI
We integrate existing AI services purposefully into applications — where it delivers real value, not because it is trending.
Mistral OpenAI Claude API Integration MCP
Ecosystem
More than services
Alongside client projects, we build our own products and brands — a growing ecosystem of software, tools and platforms.
Plugins & Themes
Shopware Extensions
Professional extensions and design themes for Shopware 6, developed and published in the official store.
View Shopware products
Client Projects
Selected Projects
Custom solutions for clients — from web applications and mobile apps to IT infrastructure.
View projects
How we work
From idea to release
No linear waterfall — software is built iteratively. Every release is the start of the next cycle.
- 1
Idea
Understand requirements, clarify goals
- 2
Planning
Architecture, tech stack, roadmap
- 3
Development
Iterative, transparent, tested
- 4
Testing
Unit, integration and E2E tests
- 5
Release
Deployment on own infrastructure
- ↩
Next cycle
// clients
Trusted by 30+ clients.
Over 30 projects from Solingen — web, mobile and desktop, Made in Germany, hosted in German data centres.
// shape your project
Put your project together.
Three short steps, then we get back to you. No sign-up, no pressure — you just sketch the direction.
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Step 1 / 3
What would you like to build?
Pick what fits best — details come later. · Single selection
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