From 4Team Corporation:
Share and synchronize Outlook calendar on multiple PCs without Exchange server. ShareCalendar is a Microsoft Outlook add-in for sharing and synchronizing Outlook calendar folders. Sync calendar folders, sync appointments, sync meetings in a few clicks. Synchronize and share outlook calendar items automatically or manually. Share different calendar folders with various groups of people, e.g. your coworkers, teammates, friends or family. Create, edit, and view calendars of your family or coworkers. Synchronize your PCs Outlook calendar information between your desktop, laptop, netbook and other computers. Subscribe your contacts to receive automatic updates of your calendar folders data: each time you update or add calendar items, all your subscribers will receive them. It is easy to maintain the subscribers list and those access-edit rights. Hide from subscribers view your private appointments and meetings. Share your Free Busy time with or without disclosing the subject and private details. Use filters to exclude private calendar events, comments and attachments from sharing. Work offline or online. You can update any item in shared folder offline, connect to the Internet or local network and those items will be synchronized or shared automatically. Resolve synchronization conflicts and duplicates of meetings and appointments. Share custom Outlook calendar forms and imported items. Synchronization and sharing between different Microsoft Outlook versions (2010, 2007, 2003, 2002, 2000). Compatible with latest Windows 7 and Outlook 2010. Synchronize calendar between Outlook 2003 at home and Outlook 2007 in the office. No server and no IT specialist is needed to install and use shared calendar software. Free support offered. It is a cost effective solution for business workgroups or family use.
What's new in this version:
This release includes support of Windows 8 and Outlook 2013, also several bug fixes.