# 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 Framework<!--app-framework-->
    - [Ability Kit](application-models/Readme-EN.md)
    - [ArkData](database/Readme-EN.md)
    - [ArkTS](arkts-utils/Readme-EN.md)
    - [ArkUI](ui/Readme-EN.md)
    - [ArkWeb](web/Readme-EN.md)
    - [Background Tasks Kit](task-management/Readme-EN.md)
    - [Core File Kit](file-management/Readme-EN.md)
    - [Form Kit](form/Readme-EN.md)
    - [IME Kit](inputmethod/Readme-EN.md)
    - [IPC Kit](ipc/Readme-EN.md)
    - [Localization Kit](internationalization/Readme-EN.md)
  - System<!--system-->
    - Security<!--system-security-->
      - [Ability Access Control](security/AccessToken/Readme-EN.md)
      - [Asset Store Kit](security/AssetStoreKit/Readme-EN.md)
      - [Crypto Architecture Kit](security/CryptoArchitectureKit/Readme-EN.md)
      - [Data Protection Kit](security/DataProtectionKit/Readme-EN.md)
      - [Device Certificate Kit](security/DeviceCertificateKit/Readme-EN.md)
      - [Universal Keystore Kit](security/UniversalKeystoreKit/Readme-EN.md)
      - [User Authentication Kit](security/UserAuthenticationKit/Readme-EN.md)
    - Network<!--system-network-->
      - [Connectivity Kit](connectivity/Readme-EN.md)
      - [Distributed Service Kit](distributedservice/Readme-EN.md)
      - [Network Kit](network/Readme-EN.md)
      - [Telephony Kit](telephony/Readme-EN.md)
    - Basic Functions<!--system-basicfun-->
      - [Basics Service Kit](basic-services/Readme-EN.md)
      - [Function Flow Runtime Kit](ffrt/Readme-EN.md)
      - [Input Kit](device/input/Readme-EN.md)
      - [MDM Kit](mdm/Readme-EN.md)
    - Hardware<!--system-hardware-->
      - [Driver Development Kit](device/driver/Readme-EN.md)
      - [Multimodal Awareness Kit](device/stationary/Readme-EN.md)
      - [Sensor Service Kit](device/sensor/Readme-EN.md)
    - Debugging Tools<!--system-debug-optimize-->
       - [Performance Analysis Kit](dfx/Readme-EN.md)
       - [Test Kit](application-test/Readme-EN.md)
       - [Debugging Commands](tools/Readme-EN.md)
  - Media<!--media-->
    - [Audio Kit](media/audio/Readme-EN.md)
    - [AVCodec Kit](media/avcodec/Readme-EN.md)
    - [AVSession Kit](media/avsession/Readme-EN.md)
    - [Camera Kit](media/camera/Readme-EN.md)
    - [DRM Kit](media/drm/Readme-EN.md)
    - [Image Kit](media/image/Readme-EN.md)
    - [Media Kit](media/media/Readme-EN.md)
    - [Media Library Kit](media/medialibrary/Readme-EN.md)
  - graphics<!--graphics-->
    - [ArkGraphics 2D](graphics/Readme-EN.md)
    - [ArkGraphics 3D](graphics3d/Readme-EN.md)
  - Applications and Services<!--gapp-service-->
    - [Ads Kit](ads-service/Readme-EN.md)
    - [Calendar Kit](calendarmanager/Readme-EN.md)
    - [Contacts Kit](contacts/Readme-EN.md)
    - [Location Kit](device/location/Readme-EN.md)
    - [Notification Kit](notification/Readme-EN.md)
  - AI<!--ai-->
    - [MindSpore Lite Kit](ai/mindspore/Readme-EN.md)
    - [Neural Network Runtime Kit](ai/nnrt/Readme-EN.md)
  - [IDL Specifications and User Guide](IDL/idl-guidelines.md)
  - [Native APIs](napi/Readme-EN.md)
- Tools
  - [DevEco Studio (OpenHarmony) User Guide](https://developer.huawei.com/consumer/en/doc/harmonyos-guides/ide-tools-overview)
  - [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)