Verdict
GitHub Actions for GitHub-native workflows and marketplace; GitLab CI for all-in-one DevOps platform
GitHub Actions and GitLab CI/CD are the two most popular CI/CD platforms, each tightly integrated with their respective Git hosting platforms.
Overview
GitHub Actions is GitHub's built-in CI/CD and automation platform. It uses YAML workflow files triggered by GitHub events (push, PR, issue, schedule). Its marketplace offers thousands of community-built actions for common tasks. GitLab CI/CD is GitLab's integrated pipeline system. It uses a .gitlab-ci.yml file to define stages, jobs, and pipelines. It is part of GitLab's all-in-one DevOps platform that includes source control, CI/CD, container registry, and monitoring.Key Differences
Marketplace: GitHub Actions has a massive marketplace of reusable actions for everything from deployment to code quality to notifications. GitLab CI relies more on scripted steps, with fewer pre-built components. Platform integration: GitHub Actions is tightly integrated with GitHub (PRs, issues, packages, security). GitLab CI is tightly integrated with GitLab's broader DevOps platform (registry, monitoring, security scanning). Runner management: GitLab CI has excellent self-hosted runner management with tags, groups, and registration workflows. GitHub Actions self-hosted runners work well but with less organizational flexibility. Pipeline visualization: GitLab CI provides superior pipeline visualization with a graphical pipeline editor and DAG view. GitHub Actions pipeline visualization is more basic. Configuration: Both use YAML. GitLab CI's configuration syntax is more mature with features like includes, extends, and anchors for complex pipeline composition. GitHub Actions is simpler but less powerful for large configurations. Free tier: GitHub Actions gives 2,000 minutes/month free on public repos (unlimited) and private repos. GitLab CI gives 400 minutes/month free. Security scanning: GitLab includes SAST, DAST, dependency scanning, and container scanning in its CI platform. GitHub requires marketplace actions or GitHub Advanced Security (enterprise).Pricing
GitHub Actions free tier includes 2,000 minutes/month. Team plan is $4/user/month. GitLab free tier includes 400 minutes/month. Premium is $29/user/month.
Verdict
Choose GitHub Actions if your code lives on GitHub and you want a rich marketplace of reusable actions. Choose GitLab CI/CD if you want an all-in-one DevOps platform with built-in security scanning, registry, and monitoring.
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