When comparing KiTTY vs OpenSSH, the Slant community recommends KiTTY for most people. In the question“What are the best SSH clients for Windows?” KiTTY is ranked 1st while OpenSSH is ranked 4th. The most important reason people chose KiTTY is:
- Sessions filter - Shortcuts for pre-defined command - The session launcher - Automatic logon script - URL hyperlinks - Running a locally saved script on a remote session - Send to tray - Transparency - Quick start of a duplicate session - SSH Handler: Internet Explorer integration - pscp.exe and WinSCP integration - New command-line options
Ranked in these QuestionsQuestion Ranking
Pro Includes additional features over PuTTy
- Sessions filter
- Shortcuts for pre-defined command
- The session launcher
- Automatic logon script
- URL hyperlinks
- Running a locally saved script on a remote session
- Send to tray
- Quick start of a duplicate session
- SSH Handler: Internet Explorer integration
- pscp.exe and WinSCP integration
- New command-line options
Pro Can store login credentials
Ability to store passwords/passphrases locally.
Pro Source Code Available
Source code is available so you could modify or review changes.
Pro Startup sessions
Support start-up sessions which allow you to specify the window/tab layout, working directories, and programs to run on startup.
Pro True Color support
Supports True Color, so software like Vim can display a really nice pallet.
Pro Background image
Ability to overlay the terminal background with an image.
Pro Auto login script
Automatic processing of commands after conncetion was made.
Uses Unicode for the best character compatibility.
Pro One of the most trustworthy development teams on the web
The development team of OpenSSH is part of the OpenBSD ecosystem. Their implementation is basically today's technical reference for any SSH client.
Pro Standard implementation that documentation for all other tools assumes you have installed already
A lot of other tools (e.g. git) are based on this for file transfer.
Pro The Reference SSH Client.
If you find samples or tutorials about SSH, they almost always refer to OpenSSH. It bascially defines what SSH is.
Pro Available on virtually any platform
macOS. Windows. Core component on any Linux flavor.
Con No centralized configuration
Each session holds its own configuration of all features. This means that if one wants to change a configuration common to all sessions (say, the terminal font), it has to be changed in each stored session separately.
A better solution would be to have a default configuration and store only the changed elements for each session (both configurations would be merged, with e priority on the specific one).
Con No tabbed sessions.
No built in support for tabbed sessions. Requires an add on.
Con No host list
Has no functions to manage huge numbers of hosts.
Con Command line tool
It can be difficult to use from a command line interface.