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Qbs vs Bazel: catalog facts
Qbs	Bazel
Free Free and open source, maintained by the community.	Free Free and open source.
Windows, macOS, Linux, Command line	Windows, macOS, Linux, Command line
Declarative project description Integrates with Qt Creator	Rebuilds only what changed, with local and distributed caching One tool for many languages and platforms
Qt itself has moved to CMake for official builds Binaries come mainly bundled with Qt Creator and the Qt SDK	Build files and rules take time to learn Adds overhead that small single-language projects may not need
Downloadable app	Downloadable app
Open source	Open source
License not stated	License not stated
No account needed	No account needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 23, 2026

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