Vimcal - Vimcal is the world’s fastest calendar, beautifully designed for people who work remotely and live in their calendars.
Image Max URL - Help find larger or original versions of images, including a customizable image popup feature
Button for Google Calendar™ - See your daily schedule and join meetings in one-click.
Hover Zoom+ - Google Chrome extension for zooming images on mouse hover - extesy/hoverzoom
Calendarist - Time blocking companion for Google Calendar
Hover Zoom - Enlarge thumbnails on mouse over.