What are some alternatives?
When comparing Facebook Reactions and Reaction Packs for Facebook, you can also consider the following products
Trump Reactions - Replace new Facebook reactions with Trump 😮
Reaction Story - Create your own reaction story
Slackmojis - A directory of the best custom slack emojis
Mojirater - Emoji reactions & social share buttons for your site
Facebook Creator - Video tools for influencers
My Slack Emoji - Turn your team photos into Slack emoji's