Daybridge - A calendar built for people, not companies.
Vimcal - Vimcal is the world’s fastest calendar, beautifully designed for people who work remotely and live in their calendars.
Skill Lake - Organize Learning | Content Track Progress | Grow Your People
Clean Google Calendar - Makes Google Calendar look nicer & launches as a desktop app
Courselle's Learning Calendar - Manage corporate learning assignments with a visual calendar
Plan - Plan is a better way to organize.