How to Build Your Own CircleCI
Replace CircleCI with a custom build. The world's leading software development platform
Build Difficulty: 5/5
Build a working replacement in a weekend with AI tools
Estimated Timeline
Based on 39 features at Weekend Project difficulty, expect about One weekend with AI-assisted development.
Recommended Tech Stack
Full-stack React framework with API routes and server components
PostgreSQL database, auth, and real-time subscriptions
Utility-first styling for rapid UI development
Key Features to Replicate
Top features across 8 categories. See all 39 features
Infrastructure(6 features)
Run jobs in lightweight, isolated Docker containers.
Run jobs on full virtual machines for more complex workloads.
Build and test iOS, watchOS, and macOS applications.
Choose from various CPU and memory configurations for your jobs.
Run jobs on your own infrastructure with private runners.
+1 more in this category
Security(5 features)
Track all user actions and API calls for compliance and security.
Securely share environment variables across projects and jobs.
Automatically track and update dependencies in your codebase.
Use OpenID Connect tokens for secure authentication to third-party services.
Securely store and manage SSH keys for deployments.
Administration(3 features)
Backup configuration and restore projects to ensure business continuity.
Configure project-specific settings including build defaults and defaults.
Assign roles and permissions to team members with granular access control.
Analytics(3 features)
Monitor and optimize build performance with detailed metrics.
Analyze test results and identify flaky tests to improve reliability.
Monitor credit consumption and usage trends across your organization.
CI/CD(3 features)
Automatically deploy code to production environments after successful testing.
Automatically build and test code changes on every commit.
Orchestrate complex multi-job pipelines with conditional execution paths.
Configuration(3 features)
Validate and process CircleCI configuration files before execution.
Generate pipeline configuration dynamically based on file changes.
Reusable packages of parameterized configuration elements for common tasks.
Workflow(3 features)
Add manual approval steps to workflows before deploying to production.
Run specific jobs only for certain branches or tags.
Run multiple job configurations in parallel with different parameters.
Integration(2 features)
Programmatically interact with CircleCI to manage projects and trigger pipelines.
Receive real-time notifications about pipeline events to external systems.
Cost Calculator
Keep Paying CircleCI
Build It Yourself
Total Cost Comparison
DIY hosting estimate based on Vercel + Supabase free/pro tiers (~$20/mo). Build time estimated from 39 features at very easy complexity.