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Buck2 vs Premake: catalog facts
Buck2	Premake
Best for: Teams with large multi-language monorepos	Best for: C and C++ projects that must build with Visual Studio, Make and Xcode
Free Free and open source.	Free Free and open source under the BSD 3-Clause licence.
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	One script generates project files for many toolsets Readable Lua-based syntax All 3 strengths for Premake One script generates project files for many toolsets Readable Lua-based syntax Runs on Windows, macOS and Linux
Designed for large monorepos and may be heavy for small projects Learning curve for BUCK files and Starlark rules	Generates project files rather than building directly Smaller ecosystem than CMake
Downloadable app	Downloadable app
Open source	Open source
License: MIT OR Apache-2.0	License: BSD-3-Clause
No account needed	No account needed
Offline features available	Offline features available
Official website Full listing and sources Sources for Buck2 buck2.build Catalog checked October 1, 2026	Official website Full listing and sources Sources for Premake premake.github.io Catalog checked October 2, 2026

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