FullCalendar - FullCalendar is an open-source JavaScript event calendar.
Pinadate - Easy scheduling, Pinadate for a meeting, 2x faster. Find the best date, together.
FreeBu - Smart free/busy calendar sharing and meeting organizer.
Framadate - Make your polls
Letsfind - Letsfind is a fast, easy-to-use, ad-free way to create online (meeting) polls.
Skeduly - Skeduly - Group scheduling made easy.