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tio vs HTerm: catalog facts
tio	HTerm
Free Free and open source.	Free Freeware; the author accepts donations via PayPal.
Linux, Command line	Windows, Linux
Simple to start with a single command Works entirely in the terminal	ASCII, hex, binary and decimal input and output Works with hardware and virtual USB serial ports
Command line only, no graphical interface Only for serial connections, not SSH or Telnet	Closed source freeware Configuration is done through an XML file
Downloadable app	Downloadable app
Open source	Closed source
License not stated	License: Freeware
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.