RSVPify - A powerful and awesomely customizable platform for selling tickets online for your event.
e-Sword - e-Sword is a feature rich and user friendly free Windows app with everything needed to study the Bible in an enjoyable and enriching manner!
JustRSVP.me - Online Invitations and response tracking for weddings, baby showers, birthdays, parties, and other...
Xiphos - Xiphos (formerly known as GnomeSword) is a Bible study tool written for Linux, UNIX, and Windows...
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.
Bible by Olive Tree - Bible+, BibleReader or The Olive Tree Bible App is a fully featured Bible app.