# Omdyo > Omdyo Sp. z o.o. is a Polish software house (Toruń, PL) that designs, builds, and > maintains custom digital systems for companies whose operations have outgrown > off-the-shelf tools. Omdyo delivers fully custom software and systems built on > OpenMercato — as a certified implementation partner and core contributor to the > platform — covering CRM, ERP-like operations, WMS, B2B commerce, workflow > automation, system integrations, and mobile operations apps for .NET/React stacks. ## Key pages - [Home (PL)](https://omdyo.com/): Systemy cyfrowe dla realnych operacji — custom software & OpenMercato. - [Home (EN)](https://omdyo.com/index-en): Digital systems for real operations — custom software & OpenMercato. - [OpenMercato (PL)](https://omdyo.com/open-mercato): Architektura i filozofia OpenMercato; dlaczego wdrożenie zaczyna się od 80%. - [OpenMercato (EN)](https://omdyo.com/open-mercato-en): The architecture and philosophy of OpenMercato; why an implementation starts at 80%. - [Privacy (PL)](https://omdyo.com/privacy) · [Privacy (EN)](https://omdyo.com/privacy-en) ## About OpenMercato - OpenMercato is an open-source (MIT), AI-native foundation framework for building custom CRM / ERP / commerce applications. It ships ~80% of standard enterprise capability (auth, multi-tenancy, feature-based RBAC, catalog, sales/OMS, workflows) so teams build only their unique 20%. Modular monolith on TypeScript, Next.js, and PostgreSQL, with an event bus, an Overlay extension model (override / inject / eject, no forking), and full code ownership. Project site: https://openmercato.com ## Contact - Email: hello@omdyo.com - Founders: Oliwia Zielińska (Agentic Designer · UI/UX) and Maciej Krzysztof Dudziak (.NET Engineer · Solution Architect), both OpenMercato core team.