> You are reading documents of OpenHarmony 3.2 Release. Obtain the [compatible SDK](../release-notes/OpenHarmony-v3.2-release.md#version-mapping) during your application development.
## Introduction
OpenHarmony is an open-source project incubated and operated by the OpenAtom Foundation. The purpose of this project is to build an open-source, distributed operating system (OS) framework for smart devices in all scenarios of a fully-connected world.
> You are reading documents of OpenHarmony 3.2 Release. Obtain the [compatible SDK](../release-notes/OpenHarmony-v3.2-release.md#version-mapping) during your application development.
The 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.
The documents are carefully organized as follows:
### Getting Started
## Getting Started
[Here](quick-start/start-overview.md) you'll learn how to quickly get started with OpenHarmony application development.
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Check out the development fundamentals, which comprise descriptions of the package structure configuration file for OpenHarmony applications and the instructions for use of resource files.
### Development
## Development
To facilitate your application development, we provide development guidelines for key features.
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All applications should be developed on top of these frameworks.
Then, equip yourself for developing the key features, with the following guidelines:
DevEco Studio is a high-performance integrated development environment (IDE) recommended for developing OpenHarmony applications.
[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.
### Hands-On Tutorials
## Hands-On Tutorials
To 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).
### API References
## API References
API references encompass all components and APIs available in OpenHarmony, helping you use and integrate APIs more effectively.
They are organized as follows:
-[Component Reference (TypeScript-based Declarative Development Paradigm)](reference/arkui-ts/Readme-EN.md)
-[Component Reference (JavaScript-based Web-like Development Paradigm)](reference/arkui-js/Readme-EN.md)
-[JS Service Widget UI Components](reference/js-service-widget-ui/Readme-EN.md)
-[JS and TS APIs](reference/apis/js-apis-ability-dataUriUtils.md)
-[Component Reference (TypeScript-based Declarative Development Paradigm)](reference/arkui-ts/ts-components-summary.md)
-[Component Reference (JavaScript-compatible Web-like Development Paradigm)](reference/arkui-js/js-components-common-attributes.md)
-[JS Service Widget UI Components](reference/js-service-widget-ui/js-service-widget-file.md)
-[JS and TS APIs](reference/apis/development-intro.md)
