Best Pair Programming Tools for Ruby

GitHub Copilot represents the next evolution of intelligent software development, combining AI-driven coding, collaboration, and automation in a single ecosystem. It seamlessly integrates with GitHub and leading IDEs, transforming natural language prompts into working code, tests, and documentation. The new Agent Mode allows developers to delegate tasks—Copilot autonomously writes, executes, and validates code using GitHub Actions, delivering ready-to-review pull requests. Developers can interact through Copilot Chat, switch between models like GPT-5, Claude Sonnet 4, and Gemini 2.0 Flash, and refine results with contextual feedback. Next Edit Suggestions and automated code review ensure project-wide consistency, helping teams catch bugs before they reach production. With Copilot Spaces, teams can organize shared context—code, notes, and knowledge—to produce tailored, high-quality results. Available in Free, Pro, and Pro+ plans, Copilot scales from individuals to enterprises with flexible model access and premium capabilities. Ultimately, GitHub Copilot transforms development from manual iteration to AI-augmented collaboration, enabling engineers to focus on innovation instead of boilerplate.

Utilize our complimentary, collaborative IDE that operates in your browser to write code in over 50 programming languages—no setup time required. Begin coding in your preferred language across any device, operating system, or platform. You can easily invite friends, team members, and colleagues to collaborate in real-time, similar to Google Docs editing. Seamlessly import, execute, and work together on countless GitHub repositories without any manual configurations. Whether you’re interested in Python, C++, HTML, or CSS, our platform allows you to learn and code in whatever language you choose, all in one place. The moment you create a new repl, it becomes live and shareable instantly with others around the globe. Join a community of over 3 million enthusiastic programmers, technologists, creatives, and learners eager to enhance their coding skills. Boost your team's efficiency with dynamic documentation, real-time collaboration features, and effortless remote interviewing options. Additionally, you can build applications programmatically, develop bots, and tailor the IDE with plugins to meet your specific requirements, ensuring a personalized coding experience. This all-in-one platform is designed to make coding more accessible and engaging for everyone.

AWS Cloud9 serves as a cloud-oriented integrated development environment (IDE) that allows you to create, execute, and troubleshoot your coding projects directly from your web browser. It features a built-in code editor, a debugger, and a terminal for ease of use. This IDE is equipped with necessary tools for various popular programming languages such as JavaScript, Python, and PHP, eliminating the need for manual installation or configuration on your local development setup to launch new projects. Being cloud-based means that you can access your Cloud9 environment from anywhere—be it your workplace, home, or any location with internet access. Additionally, Cloud9 streamlines the development of serverless applications, allowing for the effortless definition of resources, debugging, and toggling between local and remote application execution. Moreover, it facilitates collaboration by enabling you to share your development workspace with colleagues, which enhances pair programming and allows for real-time tracking of each other's contributions. Overall, Cloud9 significantly improves productivity and collaboration among development teams.

CodePen serves as a collaborative environment tailored for front-end designers and developers, allowing users to create and launch websites while showcasing their projects, learning through testing, and drawing inspiration from a vast community of over 1.8 million professionals. You can explore and share creations from top-tier designers and developers within the front-end realm. The CodePen Editor boasts extensive customization options, featuring autocomplete and Emmet for enhanced efficiency and precision, along with the ability to establish smart defaults for new projects. Users have the freedom to modify the appearance of their code demonstrations on personal sites, and any changes to the theme will automatically update all Embedded Pens. Additionally, uploading images to a Pen is simplified; users can easily drag-and-drop files onto CodePen for hosting, eliminating the need for external image storage. This functionality extends beyond images to include CSS, JSON files, SVGs, and various media formats. Among its robust features, the Projects function stands out as the most powerful aspect of CodePen, enabling users to manage and develop complex projects efficiently. With these tools at their disposal, users can truly unleash their creativity and enhance their web development skills.

CodeSandbox aims to make it easier for you to express your ideas with code, and to validate them. It also removes the hassles of setting up development tooling and sharing your project. Join us to help build the future of web coding. Over 4M developers use the platform each month. This includes organizations like Shopify and Atlassian. Since its launch, creators have created over 35M apps. It's used in thousands of open-source projects like React, Vue and Babel. You can invite your friends, colleagues, or team to join you or simply view your creation by using a URL. Use any of 1M+ packages for building real, powerful applications quickly and efficiently. Import and run repos directly from GitHub or choose from hundreds of templates to start in seconds. Boxy, CodeSandbox's AI-powered coding assistant, is now available to all Pro subscriptions.

Glitch is an innovative online programming platform that allows users to code directly in their web browsers, deploying changes in real time. You can create anything from simple static websites to complex full-stack Node applications using Glitch. There's no need to begin with a blank slate; simply remix an existing starter app or clone projects from repositories like GitHub and GitLab to explore and launch on Glitch. It supports popular JavaScript frameworks, enabling you to build on the tools that many well-known companies use to showcase applications that help you integrate with their APIs. Moreover, you can collaborate with friends on both public and private projects, making it easy for anyone with internet access to join in and continue your work seamlessly. To ensure privacy, Glitch allows you to store sensitive information like API keys in secure .env files. The platform eliminates the complexities of deployment; once you create a new project, your Glitch application is immediately live with a dedicated URL or your personalized domain. You can share or embed your projects anywhere, inviting others to explore your code or remix it for their purposes, fostering a vibrant community of collaboration and creativity. This unique approach to coding not only enhances productivity but also encourages interactive learning and sharing among developers of all skill levels.