# Application Development

- [Application Development Overview](application-dev-guide.md)
- About OpenHarmony
    - [OpenHarmony Project](../OpenHarmony-Overview.md)
    - [Glossary](../device-dev/glossary/glossary.md)
    - [OpenHarmony Release Notes](../release-notes/Readme.md)
- Getting Started
    - [Getting Started with Application Development](quick-start/Readme-EN.md)
    - [Directory Structure](quick-start/package-structure.md)
- Development
    - [Ability Development](ability/Readme-EN.md)
    - [UI Development](ui/Readme-EN.md)
    - Basic Feature Development
       - [Window Manager](windowmanager/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)
       - [Agent-Powered Scheduled Reminders](background-agent-scheduled-reminder/Readme-EN.md)
       - [Background Task Management](background-task-management/Readme-EN.md)
       - [Device Management](device/Readme-EN.md)
       - [Device Usage Statistics](device-usage-statistics/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
    - [Component Reference (JavaScript-based Web-like Development Paradigm)](reference/arkui-js/Readme-EN.md)
    - [Component 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)