Vtiger CRM is award winning software used by more than 100,000 small and medium businesses across 106 countries to run their sales, marketing, and customer service departments. It comes in both a completely free open source version, and a low-cost cloud version. Both versions have access to extensive product documentation available at wiki.vtiger.com/vtiger6 and helpdocs.vtiger.com, and the cloud version comes with free phone, email, and chat technical and product support for life. The cloud version of Vtiger sets up in seconds and is accessible globally off the shelf. It is completely customizable from the user interface, with all plug-ins included, has integrated product training, walkthroughs and documentation. The open source software is straightforward to install, and integrated into a single installer file available for Windows and Linux (RedHat, Debian, SuSe, Fedora, and Mandrake). The database, web server, and other software required for vtiger to run is automatically set up by the installer. Vtiger's CRM capabilities are extensive: In Sales: -Contact Management -Sales Pipeline Management -Leads & Opportunities -Web-to-Lead Forms -Quoting & Invoicing -Mass Email Campaigns -Sales Forecasting -Social CRM -Payment Processing -Multiple Currencies -Autoresponder Campaigns In Support: -Contact Management -Case Management -Knowledge Base -Web + Email to Ticket -SLAs Other features: -Project Management -Inventory Management -Document Management -Business collaboration -Reporting -Integrations -Mobile apps Vtiger CRM integrates with third-party productivity tools. The open source version integrates with Microsoft Outlook, Office, Exchange, Thunderbird and more. The cloud version also integrates with Gmail, Google Contacts, Calendar and Drive, Office 365, Docusign, Zapier, Accounting systems like Quickbooks, Xero and Tally, Payment systems like PayPal and Authorize.net, Phone systems like Asterisk, Twilio, and Plivo, Email marketing like MailChimp, and more.