Try meetaide ( Converse at a mutually convenient time ) it's beta stage. Meetaide can be used to let your clients or internal team to book appointments with ease. Few highlights worth mentioning Multiple calendar management Intelligent timezones detection and management Automatic reminders to reduce no-shows Easy cancellation or rescheduling. Two way sync with Google calendar Completely customizable portal No more to and fro emails just to book a meeting. Give it a spin. Converse at a mutually convenient time. :)
