# OpenHarmony Documentation This repository stores a complete range of OpenHarmony documentation. The content outline is as follows: - OpenHarmony Development
- [Device Development](device-dev/Readme-EN.md) - [Application Development](application-dev/Readme-EN.md)
- [Release Notes](release-notes/Readme.md) - [Subsystems](./readme) - OpenHarmony Contribution
- [Contribution Guide](contribute/contribution-guide.md)
- [OpenHarmony Part and API Design Reference](./design)