Bootstrap is an open source toolkit for developing with HTML, CSS, and JS. Quickly prototype your ideas or build your entire app with our Sass variables and mixins, responsive grid...

PyMuPDF is a Python binding for MuPDF – a lightweight PDF, XPS, and E-book viewer, renderer, and toolkit, which is maintained and developed by Artifex Software, Inc

UglifyJS 是一个js 解释器、最小化器、压缩器、美化器工具集（UglifyJS is a JavaScript parser, minifier, compressor and beautifier toolkit）。

UglifyJS 是一个js 解释器、最小化器、压缩器、美化器工具集（UglifyJS is a JavaScript parser, minifier, compressor and beautifier toolkit）。

AWTK全称Toolkit AnyWhere，是ZLG开发的开源GUI引擎，旨在为嵌入式系统、WEB、各种小程序、手机和PC打造的通用GUI引擎，为用户提供一个功能强大、高效可靠、简单易用、可轻松做出炫酷效果的GUI引擎。