# Native Standard Libraries Supported by OpenHarmony
## Overview
**Table 1** Standard libraries supported by OpenHarmony
| Library | Description |
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## C Standard Library
The C standard library is a C11 standard library implemented by:
libc: provides thread-related functions and a majority of standard functions.
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## libc++
[libc++](https://libcxx.llvm.org/) is an implementation of the C++ standard library.
**Version**
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## OpenSL ES
[OpenSL ES](https://www.khronos.org/registry/OpenSL-ES/) is an embedded, cross-platform audio processing library.
## zlib
[zlib](https://zlib.net/) is a general data compression library implemented in C/C++.
## EGL
EGL is an interface between Khronos rendering APIs (such as OpenGL ES and OpenVG) and the underlying native window system. OpenHarmony supports EGL.
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[EGL Symbols Exported from Native APIs](../third_party_opengl/egl-symbol.md)
## OpenGL ES
OpenGL is a cross-platform software interface for 3D graphics processing. [OpenGL ES](https://www.khronos.org/opengles/) is a OpenGL specification for embedded devices. OpenHarmony supports OpenGL ES 3.0.
Node-API provides APIs to encapsulate JavaScript capabilities as a native plug-in. It is independent of the underlying JavaScript and is maintained as part of Node.js.
Node-API is an API used to encapsulate JavaScript capabilities as native plug-ins. It is independent of the underlying JavaScript and is maintained as part of Node.js.
## Supported Capabilities
Node-API eliminates the differences between underlying JavaScript engines and provides a set of stable interfaces.
The NAPI component re-implements the Node-API and connects to underlying engines such as ArkJs. Currently, some interfaces in the Node-API standard library are supported.
The OpenHarmony Native API (NAPI) component optimizes the Node-API interface implementation and provides connection to underlying engines such as ArkJS. Currently, some APIs in the [Node-API](https://nodejs.org/docs/v14.9.0/api/n-api.html) standard library are supported.
**List of Extended Symbols of NAPI**
## Extended Symbols of NAPI
|Type|Symbol|Description|
|Type|Symbol|Remarks|
| --- | --- | --- |
|FUNC|napi_run_script_path|Runs a JavaScript file.|
**List of Symbols Exported from the Standard Library**