TubeLister - Generate a YouTube playlist from your opened tabs.
Followup.cc - FollowUp for email is a lightweight productivity suite that keeps your conversations and tasks from slipping through the cracks. Set perfectly timed reminders that arrive at the top of your inbox, right when you need them.
DiskyT - Youtube playlists done right
Streak - Manage customers inside Gmail
OrganizeTube - Create video playlists from Youtube, Vimeo and other sources
Kit CRM - A CRM for your Facebook page