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NormCap vs TRex: catalog facts
NormCap	TRex
Free Free and open source under the GPL.	Free Free to download from GitHub.
Windows, macOS, Linux	macOS, Command line
Captures text rather than an image, straight to the clipboard Tesseract recognition with support for many languages	Extracts text from images, PDFs and videos Sends recognised text straight to the clipboard
The macOS application is unsigned and must be allowed manually on first start The Linux AppImage is deprecated in favour of Flathub	macOS only Accuracy depends on the clarity of the on-screen text
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-3.0	License not stated
No account needed	No account needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked October 1, 2026

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