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Headquartered in Delhi, India, Tetra commenced its operations in 1996. By 2000 streamlined its operations as Open Source being the only focus area. Now, Tetra operates from Delhi and Kolkata and provides a comprehensive range of services across verticals. Tetra is renowned for its IT infrastructure and business-ready solutions apart from numerous Open Source Projects. We deal in Zimbra mail server, Nagios Network Monitoring software, Red Hat services, Vtiger CRM, Kickidler Helpdesk Management, OTRS - Opensource, ELK Stack, OpenIAM, oVirt, Mobile application development, Software development, Website development, Cleartax GST software, Docman, Remote server management, Digital marketing services like SEO and Social media marketing, Migration to Opensource technologies, Cloud services, etc. Visit: www.tetrain.com