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TeamCity vs Concourse CI: catalog facts
TeamCity	Concourse CI
Paid Proprietary commercial software with a free trial.	Free Free and open source.
Windows, Self-hosted	Linux, Self-hosted, Command line
Self-hostable CI/CD server you run yourself Backed by JetBrains alongside its IDEs	Pipelines are fully defined in code Container-based tasks for reproducible builds
Proprietary and commercially licensed Aimed at teams rather than individual hobby projects	Requires running your own web node, workers and PostgreSQL Its resource and job model takes time to learn
Downloadable app, Self-hosted	Downloadable app, Self-hosted
Closed source	Open source
License: Proprietary	License: Apache-2.0
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.