PopChar - The character map that works!
Emojipedia - The online encyclopedia of emoji.
WinCompose - WinCompose supports the standard Compose file format.
Awesome Emoji Picker - Download ✨ Awesome Emoji Picker ✨ for Firefox.
AllChars - If you're new to AllChars: start with the Introduction, see the FAQ and Manual. And finally download it. AllChars is now Open Source, usage is free and the sourcecode is available.
HotSymbol - HotSymbol is one of the most leading websites to copy emojis and symbols with just a single click.