> Usage terms: public: the docs, the `.proto` contract and the example clients; the engine is used under a license and its code is private: build the screens on it, do not recreate it (free licenses for developers, schools and nonprofits: https://stilldeeppos.com/free-program). Full terms and index: https://stilldeeppos.com/llms.txt

# StillDeep development journal

> How StillDeep is built: technical choices, steps of the project and what changes for developers building their own register.

Source: https://stilldeeppos.com/news/development



- [Where StillDeep comes from](https://stilldeeppos.com/news/where-stilldeep-comes-from.md) (Development, 2026-11-07): A pet store, a grooming salon and a friend who needed help: how a custom-built system turned into a point-of-sale engine.