since 1983, developing the free unix style operating system gnu, so that computer users can have the freedom to share and improve the software they use.

the eclipse foundation provides our global community of individuals and organisations with a mature, scalable, and business-friendly environment for open source …

sourceware free software

news and feature lists of linux and bsd distributions.

linux公社（www.linuxidc.com）为广大用户提供免费的安卓游戏、安卓软件下载资源，安全绿色无病毒，涵盖海内外游戏、软件、手游、单机游戏、安卓软件等资源，打造绿色、安全、高速、专业的安卓应用下载平台！

github is where over 100 million developers shape the future of software, together. contribute to the open source community, manage your git repositories, review code like a pro, track bugs and features, power your ci/cd and devops workflows, and secure code before you commit it.

stack overflow is the largest, most trusted online community for developers to learn, share​ ​their programming ​knowledge, and build their careers.

ubuntu is the modern, open source operating system on linux for the enterprise server, desktop, cloud, and iot.

gcc for windows 64 & 32 bits

the linux documentation project is working towards developing free, high quality documentation for the linux operating system. the overall goal of the ldp is to collaborate in all of the issues of linux documentation.