FreeBu - Smart free/busy calendar sharing and meeting organizer.
Skedda - Offices, co-working spaces, universities, sports venues, studios & churches are just some of the places that manage the use of their desks, rooms, courts, studios, halls and all other 'spaces' with Skedda
Letsfind - Letsfind is a fast, easy-to-use, ad-free way to create online (meeting) polls.
Teem - Cloud-based meeting room booking system
FullCalendar - FullCalendar is an open-source JavaScript event calendar.
AskCody - Meeting management system for Outlook & Office 365.