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Tera Term vs KiTTY: catalog facts
Tera Term	KiTTY
Free The software is free under its open-source licence. Hosting, hardware and external…	Free Free and open source under the MIT licence, like PuTTY.
Windows	Windows
Serial console support, a macro language for automating sessions and signed binaries make it a staple for network…	Session filter and launcher, which PuTTY still does not have Automatic login and command scripts per session
The interface is dated, and it is Windows-only with no tabs in the classic sense.	Windows only Last release was September 2023, and it is based on PuTTY 0.76
Downloadable app	Downloadable app
Open source	Open source
License: BSD-3-Clause	License: MIT
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 21, 2026

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