Discord Emoji - Iconfinder, but for emoji.
PuTTY - Popular free terminal application. Mostly used as an SSH client.
Emoji CSS - Add Emoji's to your website
MobaXterm - Enhanced terminal for Windows with X11 server, tabbed SSH client, network tools and much more
Emoji Cloud - A CDN for SVG emoji's
iTerm2 - A terminal emulator for macOS that does amazing things.