Koding - A new way for developers to work.
PuTTY - Popular free terminal application. Mostly used as an SSH client.
goormIDE - goormIDE is a cloud IDE service to maximize the productivity for developers and teams. Develop and deploy your service with powerful collaborative features, anytime and anywhere.
MobaXterm - Enhanced terminal for Windows with X11 server, tabbed SSH client, network tools and much more
Codiad - Codiad is an open source, web-based, cloud IDE and code editor with minimal footprint and requirements
iTerm2 - A terminal emulator for macOS that does amazing things.