HTTPS Everywhere - Chrome extension that encrypts and secures your browser
FreeBu - Smart free/busy calendar sharing and meeting organizer.
Smart HTTPS - Automatically changes HTTP addresses to the secure HTTPS, and if loading encounters error, reverts...
Letsfind - Letsfind is a fast, easy-to-use, ad-free way to create online (meeting) polls.
HTTPZ - HTTPZ is meant to be unobtrusive and lightweight.
FullCalendar - FullCalendar is an open-source JavaScript event calendar.