The Google Apps basket of services includes the following services: Google Gmail, Google Calendar, Google Docs, Google Videos, Google Contacts and much, much more. Many use these tools personally, now use them for your business and see how you can save money and increase productivity!
Google GMail for e-mail, instant messaging and communication (25GB Mail Storage Quota per User)
Google Calendar for shared event planning, appointments and resource scheduling
Google Docs for shared folders and documents, as well as Word Processing, Spreadsheets, Presentations and more
Contacts for all communication services, shared contacts and more
Google Video for intra-organizational video and file sharing using the YouTube architecture, but keeping all videos secure and protected from the public eye
Google Sites for publishing web-facing intranet or extranet sites, as well as group shares and portals for information sharing and collaboration
Postini Mail Filtering (Anti-spam & Anti-virus, Archiving, Compliance and more)