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OpenSSH for Windows (mls-software) vs KiTTY: catalog facts
OpenSSH for Windows (mls-software)	KiTTY
Free Free to download.	Free Free and open source under the MIT licence, like PuTTY.
Windows, Command line	Windows
Tracks current OpenSSH releases Builds still available for Windows 2000, XP and 2003	Session filter and launcher, which PuTTY still does not have Automatic login and command scripts per session
Maintained by a single small site Website is plain and sparse on documentation	Windows only Last release was September 2023, and it is based on PuTTY 0.76
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: MIT
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 21, 2026

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