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Pixi vs UPM: catalog facts
Pixi	UPM
Free The open-source application is available without a license fee.	Free Free and open source.
Windows, macOS, Linux	Windows, Linux, Command line
Cross-platform environments with lock files	One command set for several language ecosystems Builds on each language's existing package tools
Available packages depend on configured package channels.	Supports a limited set of languages Mainly shaped around Replit's own needs
Downloadable app	Downloadable app
Open source	Open source
License: BSD-3-Clause	License: MIT
Not stated if an account is needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked October 2, 2026

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