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Gradle vs Buck2: catalog facts
Gradle	Buck2
Free The build tool is free and open source; an optional paid Security Subscription adds…	Free Free and open source.
Windows, macOS, Linux, Command line	Windows, macOS, Linux, Command line
Build scripts in Kotlin or Groovy DSLs Build caching and parallel execution for faster incremental builds	Hermetic builds by default Extensible rules written in Starlark
Build logic can become complex on large projects Extended security maintenance beyond end of life requires a paid subscription	Designed for large monorepos and may be heavy for small projects Learning curve for BUCK files and Starlark rules
Downloadable app	Downloadable app
Open source	Open source
License: Apache-2.0	License: MIT OR Apache-2.0
No account needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 1, 2026

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