FullCalendar - FullCalendar is an open-source JavaScript event calendar.
UpNote - A beautiful and clean cross-platform app for notes organizer
Letsfind - Letsfind is a fast, easy-to-use, ad-free way to create online (meeting) polls.
Notesnook - Notesnook is a simple and private note taking app that keeps your notes organized and synced on your phone, tablet and computer.
FreeBu - Smart free/busy calendar sharing and meeting organizer.
todoZero - A powerful to-do and note app for busy people.