Compare software

Buck2 vs Nx: catalog facts
Buck2	Nx
Best for: Teams with large multi-language monorepos	Best for: Teams managing many projects in a single repository
Free Free and open source.	Free + paid options The build system is free; scalable CI features are offered as a separate service.
Windows, macOS, Linux, Command line	Windows, macOS, Linux, Command line
Hermetic builds by default Extensible rules written in Starlark All 3 strengths for Buck2 Hermetic builds by default Extensible rules written in Starlark Supports many languages in one build graph	Caches task results to skip repeated work Orchestrates tasks across projects in a monorepo All 3 strengths for Nx Caches task results to skip repeated work Orchestrates tasks across projects in a monorepo Designed to speed up CI
Designed for large monorepos and may be heavy for small projects Learning curve for BUCK files and Starlark rules	Most useful for larger multi-project repositories Adds configuration and concepts to learn
Downloadable app	Downloadable app
Open source	Open source
License: MIT OR Apache-2.0	License: MIT
No account needed	No account needed
Offline features available	Not stated if it works offline
Official website Full listing and sources Sources for Buck2 buck2.build Catalog checked October 1, 2026	Official website Full listing and sources Sources for Nx nx.dev Catalog checked September 24, 2026

“Not stated” means we have not confirmed it. Features can vary by device and plan.