What are some alternatives?
When comparing ConEmu and PuTTY, you can also consider the following products
MobaXterm - MobaXterm is a software that uses a set of optimized network tools included in a single exe file. MobaXterm integrates several network clients with an X server, and also integrates a full set of Unix based commands. Read more about MobaXterm.
GNOME Terminal - GNOME Terminal is a terminal emulator for GNOME desktop.
KiTTY - KiTTY is a fork from version 0.70 of PuTTY. It adds extra features to PuTTY.
Terminator - Terminator is one of the most useful and dynamic terminal emulators for Unix based operating systems.
FileZilla - FileZilla is an FTP, or file transfer protocol, client. It lets individuals transfer single files or batches to a web server. For many years, FTP was the standard for website design. Read more about FileZilla.
iTerm2 - A terminal emulator for macOS that does amazing things.