ConEmu vs Putty: What are the differences?
ConEmu: A free and open-source tabbed terminal emulator for Windows. It aims to be handy, comprehensive, fast and reliable terminal window where you may host any console application developed either for WinAPI (cmd, powershell, far) or Unix PTY (cygwin, msys, wsl bash); Putty: A free SSH and Telnet client. It is an SSH and telnet client, developed originally by Simon Tatham for the Windows platform. It is open source software that is available with source code and is developed and supported by a group of volunteers.
ConEmu and Putty can be primarily classified as "Terminal Emulators" tools.
ConEmu is an open source tool with 6.17K GitHub stars and 415 GitHub forks. Here's a link to ConEmu's open source repository on GitHub.