KiTTY v0.71.0.6 Updated

billon on 17 Jul 2019
  • 682KB (uncompressed)
  • Released on 16 Jul 2019
  • Suggested by rokth

KiTTY is a Telnet, SSH and Rlogin client forked from PuTTY. In addition to adding portability, it supports many new features, including session filters, automatic login, session icon, pre-defined saved command shortcuts, terminal protection feature, automatic login and ability to run commands on startup.

Interface improvements include transparency, roll-up and more.

System Requirements: Vista / Win7 / Win8 / Win10
Writes settings to: Application folder
Stealth: ? Yes
License: Freeware/Open Source
How to extract: Download kitty_portable.exe to a folder of your choice and launch.
What's new? See:

14 comments on KiTTY  The Portable Freeware Collection Latest Entries Feed

Midas 2015-11-15 20:39

@siegfried: I confirm your findings, even after adding a "configdir=" key with a relative path.

I'm not sure the program isn't portable like that, but it sure isn't stealth. In my defense, the method I mentioned was working in prior versions (see above). I posted the issue in KiTTY's forum: ... :(

BTW, this update (and the lack of changelog thereof) is probably caused by a version and code synch with PuTTY, which was prompted by a newly found vulnerability patch:

"2015-11-07 PuTTY 0.66 released, fixing a SECURITY HOLE
PuTTY 0.66, released today, fixes a security hole in 0.65 and before: vuln-ech-overflow."
See "Latest news" at


siegfried 2015-09-02 19:13

Not true, Kitty ( plain vanilla, md5: 4cce0b4f7670492fe06fcb9b673de8d7) + kitty.ini (with savemode=dir) It's not portable, It writes this:
c:\Users\Application Data\KiTTY\


smaragdus 2015-09-01 16:59

Thanks for the nice tip.


Midas 2015-09-01 14:09

I for one enjoy KiTTY's bells & whistles. BTW, another way to make it portable is to download the plain vanilla executable and, before first launch, create a 'kitty.ini' file in the same location with the following content:



Emka 2013-12-14 10:23 is out, which seems like a major update. Is it still portable?


Billy Bob 2010-07-28 17:31 has an origianl putty implementation that works too. Yes, kitty has a few new bells and whistles added, maybe cute, but they really don't add much value for me. And not that I use it often, but taking the Help button off the form so there is no way to access help from the application seems foolish to me, not that a help file is even included anyway, but if somebody is going to fork the source, when everything is available for free anyway, why not keep the help button and help file and add to it rather than simply get rid of it?

allochthon 2010-05-21 18:33

FWIW, KiTTY is checked by softpedia and they say it's malware free:

Vhati 2008-12-29 05:28

I exchanged emails with the author. It still works.

savemode=file by itself saves to Docs&Settings\...\AppData.
sav=kitty.sav puts that in kitty's dir instead.

Now here's the big difference.

savemode=file imports everything into the registry on startup and clears the registry when closing.

savemode=dir stealthily saves/loads a bunch of config files under kitty's dir.

And the reason those new configs aren't ini's is because his ini code can't handle large files.

Vhati 2008-12-23 08:17

Sometime after 60.65.26 (which I really liked), the devs changed the portability setting (for the worse IMO).


Now each session, stored command, and hostkey gets its own file, with settings and values delimited with slashes rather than an equals sign.

The savemode=file (everything in kitty.sav) option is no longer valid.

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