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Wombat vs fend: catalog facts
Wombat	fend
Free Free and open source under GPL-3.0.	Free Free and open source.
Linux	Command line
Calculations include physical units and dimensional analysis Keeps a live interpreter session and calculation history	Arbitrary-precision arithmetic Built-in unit handling and conversion
Available for GNU/Linux	Command-line interface only, with no graphical calculator
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	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 October 8, 2026	Official website Full listing and sources Checked September 24, 2026

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