PuTTY is described as 'Free and open-source terminal emulator supporting SSH, Telnet, and SCP. Portable, lightweight, and works offline to connect to remote systems securely' and is a leading terminal emulator in the os & utilities category. There are more than 100 alternatives to PuTTY for a variety of platforms, including Windows, Mac, Linux, Android and iPhone apps. The best PuTTY alternative is KiTTY, which is both free and Open Source. Other great apps like PuTTY are OpenSSH, MobaXterm, Tabby and Termux.
MSYS2 is an independent rewrite of MSYS, based on modern Cygwin (POSIX compatibility layer) and MinGW-w64 with the aim of better interoperability with native Windows software.
it is a shell not a ssh client
This alternative is disputed. MSYS2 is a legitimate PuTTY alternative, but it might have issues that some users think are important.
Solar presents the omniscient PuTTY SSH and Telnet client with extended interface enriched by a simple graphical SFTP explorer, all coming packed in a single exe file, which can be used without admin rights.
Secure Shell is an xterm-compatible terminal emulator and stand-alone ssh client for Chrome. It uses Native-Client to connect directly to ssh servers without the need for external proxies.
written by google developers when they took down the ssh command from crosh
Some users think Chrome Secure Shell is a great PuTTY alternative, some don't.
Tilix is a tiling terminal emulator which uses the VTE GTK+ 3 widget with the following features:
PAC is a Perl/GTK Gnome replacement for SecureCRT/Putty/etc... It provides a GUI to configure SSH/Telnet connections: users, passwords, EXPECT regular expressions, macros, etc.
SmarTTY is a neat multi-tabbed SSH client with built-in SSH support. It makes it extremely easy to connect to your SSH servers and exchange files. It allows storing your private keys securely in Windows key containers and can set up the remote host for remote key authentication...
ExtraPuTTY is a fork from 0.65 version of PuTTY and has all the features from the original while adding new ones as described below:
PortX is a lightweight cross-platform (Windows/Mac/Linux) SSH Client, as well as local shell/terminal emulator. Beautiful tabbed UI for managing multiple sessions. Google Drive syncing session files across devices and OSes is a very handy tool.
Tera Term (Pro) is a free software terminal emulator (communication program) for MS-Windows. It supports VT100 emulation, telnet connection, serial port connection, and so on.
A VNC/SSH Client for the GNOME Desktop
Shellngn is a cloud based SSH client with SFTP and Telnet support. Manage your servers anywhere you are, with a professional and feature-rich SSH and SFTP Client.
PieTTY is a free SSH client based on PuTTY and dedicated to multilingual (especially CJK) environments, accessibility, and simpler user interface. "Glass Window Mode" : Alpha-blending / HW-accelerated transparency & drop-shadow.
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It is a shell not SSH client