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HTerm vs GTKTerm: catalog facts
HTerm	GTKTerm
Free Freeware; the author accepts donations via PayPal.	Free Free and open source.
Windows, Linux	Linux
ASCII, hex, binary and decimal input and output Works with hardware and virtual USB serial ports	Simple graphical interface Lightweight GTK application
Closed source freeware Configuration is done through an XML file	Linux only Serial connections only
Downloadable app	Downloadable app
Closed source	Open source
License: Freeware	License not stated
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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