# Application Development

- [Application Development Overview](application-dev-guide.md)
- About OpenHarmony
  - [OpenHarmony Project](../OpenHarmony-Overview.md)
  - [Glossary](../glossary.md)
  - [Release Notes](../release-notes/Readme.md)
- [Quick Start](quick-start/Readme-EN.md)
- Development
  - [Application Models](application-models/Readme-EN.md)
  - [UI Development](ui/Readme-EN.md)
  - [ArkTS Common Library](arkts-utils/Readme-EN.md)
  - [Web](web/Readme-EN.md)
  - [Notification](notification/Readme-EN.md)
  - [Widget](form/Readme-EN.md)
  - [Window Manager](windowmanager/Readme-EN.md)
  - [WebGL](webgl/Readme-EN.md)
  - [Media](media/Readme-EN.md)
  - [Security](security/Readme-EN.md)
  - [Network Management](network/Readme-EN.md)
  - [Basic Communication](connectivity/Readme-EN.md)
  - [Data Management](database/Readme-EN.md)
  - [File Management](file-management/Readme-EN.md)
  - [Telephony Service](telephony/Readme-EN.md)
  - [Task Management](task-management/Readme-EN.md)
  - [Account Management](basic-services/Readme-EN.md)
  - [Device Usage Statistics](device-usage-statistics/Readme-EN.md)
  - [DFX](dfx/Readme-EN.md)
  - [Internationalization](internationalization/Readme-EN.md)
  - [Application Test](application-test/Readme-EN.md)
  - [IDL Specifications and User Guide](IDL/idl-guidelines.md)
  - [Native APIs](napi/Readme-EN.md)
  - [Performance](performance/readme-EN.md)
- Tools
  - [DevEco Studio (OpenHarmony) User Guide](quick-start/deveco-studio-user-guide-for-openharmony.md)
  - [Debugging Tools](tools/Readme-EN.md)
- Hands-On Tutorials
  - [Samples](https://gitee.com/openharmony/applications_app_samples/blob/master/README.md)
  - [Codelabs](https://gitee.com/openharmony/codelabs/tree/master)
- [API References](reference/Readme-EN.md)
- [FAQs](faqs/Readme-EN.md)
- Contribution
  - [How to Contribute](../contribute/documentation-contribution.md)

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