OfficeZilla : Free virtual officeOfficeZilla is a free virtual office which gives your group free calendar, file sharing, contact manager and message sharing. You can use it for your personal requirements or utilize the sharing features and add as many people into your GroupWare as you want to.OfficeZilla has no set limitations on file uploads, disk space, or mail space. It is ideal for your personal requirements or you can also utilize the sharing features and add as many people into your GroupWare as you want to. The calendar is free standing and does not synch up with any other calendars at this time but you can upload a CSV file of your contacts to the contact manager. Its complete set of features include Calendars, Contact Manager, Message Forums, Knowledge Base, Pop Email Reader, Link/URL Sharing, File Sharing, Chat Room, Phone Message Pad and Task Manager.