Need free team calendar? Check out Bitrix24, free web based calendar for teams #1. Bitrix24 comes with unlimited personal and team calendars, use as many as you need. Most importantly, Bitrix24 let’s you superimpose multiple calendars and subscribe to calendars of other employees, teams and departments, to stay on top of things.
Bitrix24 covers virtually every team calendar scenario. For example, you can schedule recurring events, like weekly team meetings. When scheduling events, you can invite any or all team members and receive confirmations about who’s going to attend or not. Reminders are available as well.
Your team will also appreciate the fact that Bitrix24 gives you a way to plan vacations and has an absence chart, showing you when your colleagues will be or are out of the office. And don't forget about 'Meeting Room Booking', 'Meeting and Briefings' and 'Event Scheduler' inside Bitrix24.
Bitrix24 manual is available here.
If you are interested in buying self hosted editions of Bitrix24, which come with API, CMS and source code, and can be easily customized
and integrated with other tools, please download trial version here.