A premier CI/CD platform known for speed, caching, and parallelism. However, its 2025 price hikes and complex credit consumption model (where different machine sizes burn credits at vastly different rates) make it expensive for growing teams.

The former king of open-source CI, now a paid platform with credit-based billing. While it still offers a clean configuration syntax, its high starting price and lack of free open-source tiers have caused a mass exodus to integrated tools like GitHub Actions.