GitHub

GitHub is a platform for hosting and collaborating on software. Repositories hold your Git history, Issues track work, code review tools manage changes, and Actions automate builds, tests, and deployments. The homepage frames it as a place where developers, agents, and code come together on one platform, and the product now spans the full lifecycle: planning, writing, reviewing, securing, and shipping code.

The AI layer is GitHub Copilot. It covers code completion and chat, and its agent mode can analyze a codebase, plan changes, and generate edits across multiple files — the site's demo shows it implementing a search feature across three files from a single prompt. A separate Copilot app handles agents that run from issue to merge, and an MCP Registry lets you integrate external tools. Copilot is available individually or as Copilot for Business.

Beyond the core workflow, GitHub runs a large open source ecosystem: Sponsors for funding maintainers, a Security Lab, trending repositories, and topic collections. On the commercial side, there are offerings for enterprises, small and medium teams, startups, and nonprofits, with add-ons like Advanced Security, Copilot for Business, and premium support. The site cites a Duolingo customer story reporting a 25% developer speed boost from Copilot and points to its placement in the 2025 Gartner Magic Quadrant for AI Code Assistants.

Best for

• Teams that need hosted Git repositories with issue tracking and code review in one place
• Developers who want AI assistance while writing, testing, and fixing code
• Teams automating build, test, and deploy pipelines with Actions
• Organizations that need vulnerability scanning and secret protection built into the workflow
• Open source maintainers and contributors
• Developers who want instant cloud development environments via Codespaces

Frequently asked questions

What is GitHub used for?

Hosting Git repositories and collaborating on software: tracking work with Issues, reviewing code changes, automating workflows with Actions, and writing code with Copilot's AI assistance.

How much does GitHub cost?

The homepage links to a pricing page but doesn't list plan details. GitHub sells plans aimed at individuals, teams, and enterprises — check github.com/pricing for current tiers and what each includes.

What does GitHub Copilot do?

It's an AI assistant that works across the development lifecycle: suggesting code, answering questions in chat, and running in an agent mode that can plan and apply edits across multiple files in your repository.

Does GitHub handle CI/CD?

Yes. GitHub Actions automates workflows, and CI/CD is listed among the platform's core use cases alongside DevOps and DevSecOps.

What security features does it include?

GitHub Advanced Security covers code security for finding and fixing vulnerabilities and secret protection for stopping credential leaks. These are positioned as enterprise-grade add-ons.

Is GitHub only for open source?

No. While it hosts a large open source community, the platform also targets enterprises, small and medium teams, startups, and nonprofits with their own development workflows.

Alternatives

• Sentry — pick it when your main need is error monitoring and performance tracing for running applications.
• Pipedream — for connecting APIs with code-level control rather than managing source code.
• Mintlify — for publishing product documentation, which sits outside GitHub's core scope.
• Fern — for generating API documentation and SDKs from a spec.
• App Creation Studio — for building applications without managing Git repositories and developer workflows.