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icdiff vs diffnav: catalog facts
icdiff	diffnav
Free Free software distributed under a GPL-compatible license.	Free Free to download from GitHub.
Command line	Command line
Shows differences in a side-by-side terminal view Highlights changes within lines	File tree for moving between changed files Builds on delta's diff rendering
Requires a terminal that can display color for colored highlighting.	Terminal only Relies on delta for rendering
Downloadable app	Downloadable app
Open source	Closed source
License not stated	License not stated
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.