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SimplySerial vs Termite: catalog facts
SimplySerial	Termite
Free Free and open source under the MIT licence.	Free Free to download and use from CompuPhase.
Windows, Command line	Windows
Runs directly in a Windows console window Quick way to open a serial connection	Chat-style interface that is quick to learn Automatic search for the right COM port
Windows only Basic feature set compared with full serial terminal programs	Windows only Serial connections only, with no SSH or Telnet
Downloadable app	Downloadable app
Open source	Closed source
License: MIT	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.