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Concourse CI vs TeamCity: catalog facts
Concourse CI	TeamCity
Free Free and open source.	Paid Proprietary commercial software with a free trial.
Linux, Self-hosted, Command line	Windows, Self-hosted
Pipelines are fully defined in code Container-based tasks for reproducible builds	Self-hostable CI/CD server you run yourself Backed by JetBrains alongside its IDEs
Requires running your own web node, workers and PostgreSQL Its resource and job model takes time to learn	Proprietary and commercially licensed Aimed at teams rather than individual hobby projects
Downloadable app, Self-hosted	Downloadable app, Self-hosted
Open source	Closed source
License: Apache-2.0	License: Proprietary
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.