Planniversary - Never forget a gift or a birthday / anniversary again 🎁📆
Slack Birthday Bot - Slack bot for celebrating birthdays
Cupcake - Keep track of your friends' birthdays
Billionth Second Birthday - Find the moment you'll have been alive for 1 billion seconds
BirthdayBot for Slack - Don't miss your teammates' birthdays!
hbd - birthday reminders for the people you actually care about.