Toggl - Toggl is an online time tracking tool. It features 1-click time tracking and helps you see where your time goes. Free and paid versions are available.
RSVPify - A powerful and awesomely customizable platform for selling tickets online for your event.
Harvest - Simple time tracking, fast online invoicing, and powerful reporting software. Simplify employee timesheets and billing. Get started for free.
JustRSVP.me - Online Invitations and response tracking for weddings, baby showers, birthdays, parties, and other...
RescueTime - Time management software that shows you how you spend your time & provides tools to help you be more productive.
Evite - Send online invitations for all occasions by email or text message. Create invites for birthdays, baby showers, save the dates, or customize your own design.