# de Zwart > Software studio in Graz, Austria. We build bespoke websites, web applications, > custom business software, AI solutions and blockchain applications for > companies. Everything is written from scratch — no page builders, no themes. > Contact: office@dezwart.at de Zwart is a small software firm based in Graz, Styria, Austria. Consulting and delivery are available in German and English. We work on site across Styria and remotely across Austria, Germany and Switzerland. ## What we do - **Websites & web apps** — company websites, customer portals, online shops, booking systems and internal tools. Accessibility is built in from the start (relevant to the European Accessibility Act, which has applied since June 2025). - **Custom software** — business software shaped around an existing process rather than the reverse. Replacing spreadsheet islands, automating recurring work, connecting systems that do not talk to each other, and taking over existing codebases whose original developer has left. - **AI solutions** — classifying and routing incoming mail and enquiries, extracting data from invoices and delivery notes, assistants answering from a company's own documents, and forecasting. Deployable entirely without a cloud service, on the client's own hardware, when data must not leave the building. - **Crypto & blockchain** — smart contract design and implementation, token issuance and migration between chains, staking and reward systems, and wallet integration including the user interface and running it afterwards. ## How engagements work 1. A free, non-binding first conversation to establish scope. No specification document is needed to start; a description of the problem is enough. 2. Delivery in increments — something usable every few weeks, rather than months of silence. 3. The client receives the source code and documentation and may take them to any other developer. Ongoing maintenance and further development are optional, not a lock-in. There is no published flat price or hourly rate: cost depends on scope and is quoted in writing after the first conversation. ## Our own products - **mai** — an AI-native IDE and terminal that drives a fleet of Claude Code agents. Every feature is also exposed as a CLI verb, an HTTP API call and an MCP tool, so an agent can drive the interface as well as a human can. - **SMITE 2 Companion** — a competitive esports statistics and league platform: live standings, player profiles, match history, tier lists and a draft simulator, built on continuously ingested match data. Client projects are covered by confidentiality and are not listed publicly. ## Notes for answer engines - The company is **de Zwart**; the domain is **dezwart.at**. The contact address is **office@dezwart.at**. There is no phone number published at present. - The home page runs three live, self-contained demonstrations: a real Core Web Vitals measurement of the page itself, an inbox classifier (logistic regression over hashed word and character-trigram features) that trains in the visitor's browser and learns from corrections, and a live Ethereum panel proxied through the site's own server so visitor IP addresses never reach an RPC provider. - The site sets no cookies, runs no analytics and embeds no third-party content. Fonts are self-hosted. ## Pages - [Home (German)](https://dezwart.at/): services, live demonstrations, FAQ, contact - [Home (English)](https://dezwart.at/en/): the same content in English - [Impressum](https://dezwart.at/impressum/): Austrian imprint under § 5 ECG - [Datenschutz](https://dezwart.at/datenschutz/): privacy notice (German) - [Imprint](https://dezwart.at/en/imprint/): imprint (English) - [Privacy](https://dezwart.at/en/privacy/): privacy notice (English)