gitea (git with a cup of tea) is a painless self-hosted git service written in go

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.

vinchin backup & recovery is a professional vm backup, vm migration and database protection solution for various environments like vmware vsphere, hyper-v, proxmox, xenserver, xcp-ng, ovirt, olvm, oracle database, sql server, my sql, mariadb, etc.

q&a for ubuntu users and developers

enjoy a fully managed private cloud with on-prem and hybrid configurations. we have enterprise-level private cloud services for any organization. contact us!

博客园是一个面向开发者的知识分享社区。自创建以来，博客园一直致力并专注于为开发者打造一个纯净的技术交流社区，推动并帮助开发者通过互联网分享知识，从而让更多开发者从中受益。博客园的使命是帮助开发者用代码改变世界。

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

a computer science portal for geeks. it contains well written, well thought and well explained computer science and programming articles, quizzes and practice/competitive programming/company interview questions.