Semaphore Open Source CI/CD
The open source CI/CD platform
Semaphore Open Source CI/CD launched on February 27, 2025 with 117 votes, #341 of 5,999 launches that month and more than 95% of that year's launches. The site was still online in September 2026, 1 year on.
What it does
Semaphore CI/CD helps product teams ship software faster, with quality and security. 🚀 Features - Blazing-fast CI/CD - Simple yet powerful - Scales with you - Built for the modern cloud
Semaphore CI built for coding agents - fast, affordable, and enterprise-ready.
You don’t configure anything or learn a new tool. Tell your agent what you want, and it sets up your CI for you — and connects you to Semaphore along the way. Made a change? Your agent runs it first in a quick, production-identical sandbox — so you catch problems before they ever reach CI. Warm the box once, then run check after check in seconds. Stable, reproducible test runs that pass more often on the first try, reducing re-runs and shortening PR-to-merge time. As your codebase grows, your agent keeps CI fast and healthy — spotting slow steps and flaky tests and fixing them as it goes. Maintenance and optimization are built in. Every organization starts with $15 of free usage every…from semaphore.io
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