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GNU bc vs fend: catalog facts
GNU bc	fend
Free Free software from the GNU Project.	Free Free and open source.
Command line	Command line
Arbitrary precision arithmetic Scriptable, with C-like syntax	Arbitrary-precision arithmetic Built-in unit handling and conversion
Terse syntax unfamiliar to casual users Text-only, no graphing or symbolic maths	Command-line interface only, with no graphical calculator
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: MIT
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 24, 2026

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