compare
Bazel vs Buck2
The same facts for both, read from GitHub every night, and the relation a person reviewed.
| Fact | Bazel | Buck2 |
|---|---|---|
| Language | Java | Rust |
| Licence | Apache-2.0 | Apache-2.0 |
| Stars | 26k | 4.5k |
| Latest | 9.2.0 | latest |
| Last push | 2026-10-06 | 2026-10-06 |
| Release cadence | too few releases | too few releases |
| Active contributors | 64+ commit authors on the default branch in the last 90 days | 69+ commit authors on the default branch in the last 90 days |
| Flags | none | none |
How they relate
Buck2 replaces Bazel. Alternatives to Bazel →
Full replacementStarlark build rules with remote execution, from Meta.
Bazel
Buck2
- latest2023-04-13pre-release
- 2026-10-012026-10-01pre-release
- 2026-09-152026-09-15pre-release
- 2026-09-012026-09-01pre-release
- 2026-08-222026-08-22pre-release
Bazel
unsigned The latest release, 9.2.0, carries no signature GitHub could verify.
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Buck2
unsigned The latest release, latest, carries no signature GitHub could verify.
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