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HTerm vs moserial: catalog facts
HTerm	moserial
Free Freeware; the author accepts donations via PayPal.	Free Free and open source under the GPLv3.
Windows, Linux	Linux
ASCII, hex, binary and decimal input and output Works with hardware and virtual USB serial ports	Graphical interface that fits the GNOME desktop Session logging for debugging serial devices
Closed source freeware Configuration is done through an XML file	Linux desktop only Limited to serial connections
Downloadable app	Downloadable app
Closed source	Open source
License: Freeware	License: GPL-3.0
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.