Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
You've Got Spam - A new tool that lets you spam back the spammer
Ticket Tailor - Ticket Tailor is an easy-to-use event ticketing platform that allows event organizers of all shapes and sizes to sell tickets online.
RoboKiller - A paid application for iOS and Android users which blocks and pranks spam callers, such as scammers.
Attendize Event Ticketing - Attendize is a free & open-source ticket selling and event management platform
Truecaller - Find a person by a name or phone number worldwide for free using Truecaller.