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KpyM Telnet/SSH Server

Free plan Self-hostedWindows

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KpyM Telnet/SSH Server's own site

Plans

PlanBilled and limitsPrice
KpyM Telnet/SSH ServerWindows server · default limit of 255 simultaneous connectionsFree

As kpym.com lists them, read 8 Oct 2026. The maker's own page has the final word.

Facts from KpyM Telnet/SSH Server's own pages

Access controls
Administrators can use allowed_login_list or forbidden_login_list settings to control which users may log in. · kpym.com, 8 Oct 2026
Connection limit
The FAQ says the default limit is 255 simultaneous connections and that the limit has never been tested at that scale. · kpym.com, 8 Oct 2026
Display limitation
The FAQ says some screen display problems when connecting onward to another machine still existed at the time the page was written. · kpym.com, 8 Oct 2026
Install requirements
Installing or uninstalling the service requires a Windows account that is a member of Administrators or Power Users. · kpym.com, 8 Oct 2026
Nag screen
The registration page says KTS is free of charge and that the registration key removes the connection nag screen. · kpym.com, 8 Oct 2026
Open source
The source code is distributed under the BSD license and can be extracted by selecting the Source Files checkbox during installation. · kpym.com, 8 Oct 2026
Purpose
KTS provides remote access to a Windows host over Telnet or SSH so users can run command-line and console graphic applications. · kpym.com, 8 Oct 2026
Release status
The download page lists version 1.19c, released January 29, 2011. · kpym.com, 8 Oct 2026
SFTP
When running as an SSH server, KTS provides file transfer and file manipulation through SFTP. · kpym.com, 8 Oct 2026
SSH library
The maker says SSH support is provided through Peter Gutmann’s cryptlib library. · kpym.com, 8 Oct 2026
Support
The maker recommends posting questions, problems, and bug reports in the KpyM Telnet/SSH Server forum and also lists a support email address. · kpym.com, 8 Oct 2026
Windows accounts
KTS uses native Windows identification, so it does not store additional usernames and passwords; users log in with their Windows credentials. · kpym.com, 8 Oct 2026

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