Exactly the software everyone wants
Standard software not good enough? Whether full software or a single interface: we build a solution that meets all your needs.
Fast delivery, lasting value
Why software from HartCon.24?
Our team of experienced developers guides you to the perfect solution. Tell us what you need — we build it to fit.
The right tool for the job
Python with FastAPI for web and APIs, C#/.NET for Act! add-ons and Windows services — fit over dogma.
Agile delivery
Your requirements are our roadmap. With a shared backlog we deliver agile — flexible and transparent.
Modern development tools
GitHub, Jira and AI-assisted development with tools from Anthropic and OpenAI — more speed, reviewed quality.
Technology stack
Our stack — current and production-proven
What we build with every day: the same stack that runs our own customer portal, this website and our products — not a slideware promise.
Python & FastAPI
Backends and REST APIs with Python 3.12, FastAPI, SQLAlchemy and PostgreSQL — fast, type-safe, open.
Linux & containers
Runs on Linux servers: Docker stacks, Caddy and Nginx as reverse proxy, Proxmox virtualisation.
.NET for Act!
Add-ons and Windows services in C#/.NET — deeply integrated with Act!, from SDK to Web API.
Web front ends
Jinja, Tailwind CSS and TypeScript — lean, fast interfaces without framework bloat.
AI in the workflow
Speech and text AI where it removes work: transcription, assistants, process automation.
Integrations & security
Microsoft 365/Graph, WebSockets, e-invoicing (XRechnung, Swiss QR) — encrypted and continuously monitored.
Here you don't just get software — we create solutions that make your work more efficient and help you reach your goals.
HartCon.24 — your companion for CRM, hosting and software development.Frequently asked questions
Which technologies do you build with?+
We build web and APIs with Python, FastAPI and PostgreSQL, running on Linux with Docker. Act! add-ons and Windows services are built in C#/.NET. Add Tailwind and TypeScript on the front end plus AI building blocks for transcription and automation.
Why custom software?+
It's tailored perfectly to your needs. You gain flexibility and can scale it easily as your business grows.
How does the process work?+
We start with a kick-off to understand requirements and goals, create a backlog and deliver step by step with regular feedback loops.
Is there support after development?+
Of course! We provide comprehensive support and maintenance so your software stays optimized and up to date.
Let's talk.
Get a free initial consultation — we take your business to the next level.