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asdf vs jEnv: catalog facts
asdf	jEnv
Free Free and open source under the MIT licence.	Free Free and open source under the MIT licence.
macOS, Linux, Command line	macOS, Linux, Command line
One tool and one .tool-versions file replaces nvm, rbenv, pyenv and friends Plugin ecosystem covers hundreds of runtimes and CLI tools	Per-project, per-shell and global Java version selection Plugins for build tools
Shim indirection adds startup latency and occasionally confuses tooling Plugin quality varies since each is community-maintained	Does not download JDKs; they must be installed separately Small maintainer team
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: MIT
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked October 1, 2026

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