Send Me Color! - With Send Me Color! you can send a hint to your contacts that will look like color card.
EventsApp - A simple concise app for creating and sharing events.
Partey.io - Invite to parties and events. Dead simple, privacy-first. Just send a link to your friends. No accounts needed!
Event Hunt - Startups and Tech Events Curated By Locals
Push Party - Push Party is an exclusive, invite-only social network
Calendify - Calendify is an event community where you can share, publish, and subscribe to event calendars. It helps you to stay informed about what you are interested in and what is yet to come.