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Viz vs TRex: catalog facts
Viz	TRex
Free Free to download; the developer accepts GitHub Sponsors donations.	Free Free to download from GitHub.
macOS	macOS, Command line
Extracts text from both images and videos Reads QR codes and barcodes	Extracts text from images, PDFs and videos Sends recognised text straight to the clipboard
macOS only Little documentation on the product page	macOS only Accuracy depends on the clarity of the on-screen text
Downloadable app	Downloadable app
Closed 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	Not stated if it works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 1, 2026

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