Shares of Wipro gained 3.22 per cent, while Infosys was up 2.66 per cent and TCS rose 1.37 per cent on the BSE.
Wipro was the top gainer among the 30-Sensex scrips.
Among others, Hexaware Technologies climbed 1.57 per cent, HCL Tech (1.43 per cent) and Tech Mahindra (1.39 per cent).
Led by gains in these stocks, the BSE IT index was up 1.94 per cent at 10,895.40.
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"In-line with benchmark index, almost all the sectoral indices ended on negative to flat note except IT, which gained nearly 2 per cent due to weakness in currency against the US dollar," said Jayant Manglik, President-retail distribution, Religare Securities.
A fall in rupee versus the US currency is broadly seen as positive for export-focused sectors like the Indian IT space.
Analysts said large IT companies benefit from a weaker rupee, as it positively impacts their profit margins.
At the Interbank Foreign Exchange (Forex) market, the domestic unit commenced lower at 61.92 and immediately touched a low of 61.95 against the dollar, a level not seen since March 4, 2014 when it had logged an intra-day low of 62.15.