Buildkite Agent vs TeamCity
A side-by-side comparison of two self-hosted ci/cd & build options — licensing, setup difficulty, resource needs, and what each one replaces.
| Feature | Buildkite Agent | TeamCity |
|---|---|---|
| Deploy effort | Under-an-hour setup | Under-an-hour setup |
| Category | CI/CD & Build | CI/CD & Build |
| License | MIT | Proprietary |
| Language | Go | Java |
| Setup difficulty | Medium | Medium |
| Min. RAM | 256 MB | 4,096 MB |
| Deployment | docker, binary, bare-metal | docker, bare-metal |
| GitHub stars | ★ 1,078 | — |
| First released | 2014 | 2006 |
| Replaces | GitHub Actions, CircleCI | Jenkins, CircleCI |
What are Buildkite Agent and TeamCity?
Buildkite Agent
The Buildkite Agent is an open-source build runner that executes pipeline jobs on your own machines while Buildkite coordinates orchestration. It lets teams keep build infrastructure private and scalable.
- Runs builds on your own hardware
- Cross-platform agent
- Parallel job execution
- Artifact handling
TeamCity
TeamCity is a build management and continuous integration server from JetBrains. The Professional edition is free for self-hosting smaller teams and supports many build runners and VCS systems.
- Smart build configuration
- Build chains and dependencies
- Rich VCS integration
- Detailed test reporting
Buildkite Agent vs TeamCity: key differences
Buildkite Agent is written in Go, while TeamCity is built with Java. Licensing differs — MIT for Buildkite Agent versus Proprietary for TeamCity. Buildkite Agent is the lighter option, starting around 256 MB of RAM against 4,096 MB for TeamCity. TeamCity is the more established project (first released 2006), while Buildkite Agent arrived in 2014.
Why pick each one
Choose Buildkite Agent if…
- Released under the MIT license
- First-class Docker support for quick deployment
- Active community (1.1k GitHub stars)
- Written in Go
Choose TeamCity if…
- Released under the Proprietary license
- First-class Docker support for quick deployment
- Written in Java
Frequently asked questions
Is Buildkite Agent or TeamCity better?
Neither is universally better. Buildkite Agent has the larger community; both share a medium setup difficulty, so the decision comes down to features and licensing.
Are Buildkite Agent and TeamCity free and open-source?
Yes. Buildkite Agent is licensed under MIT and TeamCity under Proprietary. Both can be self-hosted at no software cost.
Can I run Buildkite Agent and TeamCity with Docker?
Buildkite Agent: yes. TeamCity: yes.
Which is lighter on resources, Buildkite Agent or TeamCity?
Buildkite Agent has the smaller minimum footprint at 256 MB of RAM, compared to about 4,096 MB for TeamCity. Real-world usage depends on library size, user count, and enabled features.