# Application Development

[Application Development Overview](application-dev-guide.md)

- Learn About the OpenHarmony Community
  - [OpenHarmony Community](../OpenHarmony-Overview.md)
  - [OpenHarmony OS](../readme)
  - [Glossary ](../device-dev/glossary/glossary.md)
  - [OpenHarmony Release Notes](../release-notes/Readme.md)
- Quick Start
  - [Getting Started with Application Development](quick-start/Readme-EN.md)
  - [Directory Structure](quick-start/package-structure.md)

-   Development
    - [ArkUI](ui/Readme-EN.md)
    - Basic Functions
      - [Agent-Powered Scheduled Reminders ](background-agent-scheduled-reminder/Readme-EN.md)
      - [Background Task Management ](background-task-management/Readme-EN.md)
      - [WebGL](webgl/Readme-EN.md)
      - [Media](media/Readme-EN.md)
      - [Security](security/Readme-EN.md)
      - [Connectivity](connectivity/Readme-EN.md)
      - [Data Management](database/Readme-EN.md)
      - [Device](device/Readme-EN.md)
      - [DFX](dfx/Readme-EN.md)
-   Tools
    - [DevEco Studio \(OpenHarmony\) User Guide](quick-start/deveco-studio-user-guide-for-openharmony.md)
-   Hands-On Tutorials
    - [Samples](https://gitee.com/openharmony/app_samples/blob/master/README.md)
-   API References
    - [Compent Reference (JavaScript-based Web-like Development Paradigm)](reference/arkui-js/Readme-EN.md)
    - [Compent Reference (TypeScript-based Declarative Development Paradigm)](reference/arkui-ts/Readme-EN.md)
    - [APIs](reference/apis/Readme-EN.md)
-   Contribution
    - [How to Contribute](../contribute/documentation-contribution.md)