Compare software

fend vs eva: catalog facts
fend	eva
Free Free and open source.	Free Free and open source under the MIT licence.
Command line	Windows, macOS, Linux, Command line
Arbitrary-precision arithmetic Built-in unit handling and conversion	Interactive REPL or one-off expressions from the command line Syntax highlighting and persistent history
Command-line interface only, with no graphical calculator	No packaged releases on GitHub A plain calculator, not a full programming language like bc
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: MIT
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked October 2, 2026

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