Zoho CRM offers various Apps and Add-ons for Productivity and Collaboration that will improve your efficiency while working with sales leads, prospects and customers. There are a set of add-ons for Google Apps users, including some integration with Zoho products such as the Zoho Mail and Zoho Projects. Additionally there are some Third-Party apps such as QuickBooks Integration, and Plug-in for MS Outlook. These add-ons & apps are categorized under three headings: