Emoji Builder - Create your own emoji in no time 💨
Photoshop.com - Photoshop.
Emojidex - Emojis-as-a-service
piZap - Free online photo editing software.
My Slack Emoji - Turn your team photos into Slack emoji's
Phixr - Phixr is a free online photograph proofreader, an instrument for editing your photos in your web program.