RSVP Keeper - Online RSVP's made easy
Capture - A great free screen capture utility that allows you to capture either a window or the desktop and save it to either a file or the clipboard.
Meetinch Attend - Your personal RSVP tracking assistant
Bigbee - Connect with anyone, anywhere.
IGdm - Instagram direct messaging on your laptop
Meetify - Seamlessly Connect with Anyone, Anywhere