Coding platform

Gitpod streamlines developer workflows by providing prebuilt, collaborative developer environments in your browser - powered by VS Code.

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Build automation for the container era

Gitea (Git with a cup of tea) is a painless self-hosted Git service written in Go

Gitee.com（码云） 是 OSCHINA.NET 推出的代码托管平台，支持 Git 和 SVN，提供免费的私有仓库托管。目前已有超过 600 万的开发者选择 Gitee。

Click. Code. Done.

GitHub Copilot works alongside you directly in your editor, suggesting whole lines or entire functions for you.

OSDN is a free-of-charge service for open source software developers. We offer Git/SVN/Mercurial/Bazaar/CVS repositories, mailing list, bug trafficking system, bulletin boards and forums, web si...

The textbook Algorithms, 4th Edition by Robert Sedgewick and Kevin Wayne surveys the most important algorithms and data structures in use today. The broad perspective taken makes it an appropriate introduction to the field.

Flowcode is the #1 QR code maker. Logo, color and design, backed with privacy and data, all included for free. Download high print quality files today.

A versatile link directory script powered by PHP, Smarty, Jquery and mySQL that is versatile enough to be an article directory script, link directory script, classified ad site and much more

An online platform for learning and teaching cyber security, all through your browser.

From beginners to experts, this is where hackers level up! Join today and learn how to hack.

HackThisSite.org is a free, safe and legal training ground for hackers to test and expand their ethical hacking skills with challenges, CTFs, and more.

https://play.google.com/store/apps/details?id=com.mauriciogior.openqrcode - mauriciogior/open-qrcode

Simple collaboration from your desktop

CodeStream is a developer collaboration platform that integrates all of your essential dev tools, such as GitHub, GitLab, Bitbucket, Slack, Teams, Jira, Trello and more, into VS Code, Visual Studio and all JetBrains IDEs. CodeStream increases developer productivity by eliminating distractions inherent to context-switching and makes it incredibly easy for development teams, especially remote teams, to discuss and review code in a more natural and contextual way.

Gogs is a painless self-hosted Git service.

Gogs is a painless self-hosted Git service.

Gitea (Git with a cup of tea) is a painless self-hosted Git service written in Go

Codeberg is founded as a Non-Profit Organization, with the objective to give the Open-Source code that is running our world a safe and friendly home, and to ensure that free code remains free and secure forever.

The Exploit Database - Exploits, Shellcode, 0days, Remote Exploits, Local Exploits, Web Apps, Vulnerability Reports, Security Articles, Tutorials and more.

Reduce the risk of a security incident by working with the world’s largest community of hackers. HackerOne offers bug bounty, VDP, & pentest solutions.

Online interactive HTML Cheat Sheet contains useful code examples and web developer tools, markup generators and more.

Preserving open source software for future generations

Test your C# code online with .NET Fiddle code editor.

Share and save free code snippets, HTML5, CSS3 and JS Demos. Collaborate with other web developers using this free code sharing tool.