1# Application Development Overview 2 3The application development documents provide reference for you to develop applications using the APIs provided by OpenHarmony. They walk you through how to use JavaScript APIs to develop applications on the standard system. 4 5The documents are carefully organized as follows: 6 7### Getting Started 8 9[Here](quick-start/Readme-EN.md) you'll learn how to quickly get started with OpenHarmony application development. 10 11Browse the documents on the instructions for quickly building your first application and the basics about OpenHarmony applications. 12 13Check out the development fundamentals, which comprise descriptions of the package structure configuration file for OpenHarmony applications and the instructions for use of resource files. 14 15### Development 16 17To facilitate your application development, we provide development guidelines for key features. 18 19First thing first, familiarize yourself with the two cornerstone frameworks in OpenHarmony applications: 20 21- Application framework: [Application Models](application-models/Readme-EN.md) 22- UI framework: [UI Development](ui/Readme-EN.md) 23 24All applications should be developed on top of these frameworks. 25 26Then, equip yourself for developing the key features, with the following guidelines: 27 28- [Web](web/web-component-overview.md) 29- [Notification](notification/Readme-EN.md) 30- [Window Manager](windowmanager/Readme-EN.md) 31- [WebGL](webgl/Readme-EN.md) 32- [Media](media/Readme-EN.md) 33- [Security](security/Readme-EN.md) 34- [Connectivity](connectivity/Readme-EN.md) 35- [Telephony Service](telephony/Readme-EN.md) 36- [Data Management](database/Readme-EN.md) 37- [File Management](file-management/Readme-EN.md) 38- [Task Management](task-management/Readme-EN.md) 39- [Device Management](device/Readme-EN.md) 40- [Device Usage Statistics](device-usage-statistics/Readme-EN.md) 41- [DFX](dfx/Readme-EN.md) 42- [Internationalization](internationalization/Readme-EN.md) 43- [Application Test](application-test/Readme-EN.md) 44- [IDL Specifications and User Guide](IDL/idl-guidelines.md) 45- [Using Native APIs in Application Projects](napi/Readme-EN.md) 46 47### Tools 48 49DevEco Studio is a high-performance integrated development environment (IDE) recommended for developing OpenHarmony applications. 50[Here](https://developer.harmonyos.com/en/docs/documentation/doc-guides/ohos-deveco-studio-overview-0000001263280421) you can learn everything about DevEco Studio, including how to use this tool to create a project and sign, debug, and run an application. 51 52### Hands-On Tutorials 53 54To make you better understand how functions work together and jumpstart your application development projects, we provide stripped-down, real-world [samples](https://gitee.com/openharmony/applications_app_samples/blob/OpenHarmony-3.2-Release/README.md) and [codelabs](https://gitee.com/openharmony/codelabs). 55 56### API References 57 58API references encompass all components and APIs available in OpenHarmony, helping you use and integrate APIs more effectively. 59 60They are organized as follows: 61 62- [Component Reference (TypeScript-based Declarative Development Paradigm)](reference/arkui-ts/Readme-EN.md) 63- [Component Reference (JavaScript-based Web-like Development Paradigm)](reference/arkui-js/Readme-EN.md) 64- [JS Service Widget UI Components](reference/js-service-widget-ui/Readme-EN.md) 65- APIs 66 - [JS and TS APIs](reference/apis/Readme-EN.md) 67 - Native APIs 68 - [Standard Library](reference/native-lib/third_party_libc/musl.md) 69 - [Node_API](reference/native-lib/third_party_napi/napi.md) 70 71### Readme 72 73For details about the principles and basic information of each subsystem, see the README file in [docs/en/readme](../readme). 74