As an aftermath of the multi-billion dollar fraud at Satyam Computer early this year,

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the Hyderabad-based firm is now officially out of the league of the country's largest software companies, but its new parent Tech Mahindra is now among the top five IT firms.

Besides, rival HCL Tech has now moved up one place to grab the country's fourth largest IT firm's position, occupied by Satyam Computer till last year, according to the latest rankings by industry association Nasscom.

Tech Mahindra, previously ranked sixth, has also moved up one place because of Satyam's exit, while TCS, Infosys and Wipro have retained their top three positions in the list of the country's largest software exporters in terms of their revenue.

Satyam Computer, which has been rebranded to Mahindra Satyam due to its acquisition by Mahindra group's IT arm, has not been included in the ranking at all, as it is yet to release its full-year audited results for the latest financial year.