I have knowledge about the top 10 public listed software companies of India. So here I am providing you information about it, as you want.

List of public listed software companies of India
Here I am telling you about it, with following format;
Company
Founded Revenue
3i Infotech Limited
1993 US$ 239 million

HCL Technologies
1976 US$ 5.36 billion

Geometric Limited
1984 US$ 182 million

Infosys
1981 US$ 8.24 billion

KPIT Technologies
1990 US$ 444.32 million

Mastek
1982 US$ 150.43 million

Mindtree
1999 US$ 583.8 million

Mphasis
1992 US$ 990 million(2013)

NIIT
2004 US$ 381 million (FY 2009)

Oracle Financial Services Software
1991 US$ 478 million(2010)

Persistent Systems
1990 US$ 274.06 million(2014)

Rolta India Ltd
1989 US$ 230 million(2014)

Sasken Communication Technologies
1989 US$ 93 million (2010)

Sonata Software
1986 US$ 220 million (2010)

Tata Consultancy Services(TCS)
1968 US$ 13.44 billion(31 March 2014)

Tata Elxsi
1989 US$ 100 million (2013)

Tech Mahindra
1986 US$ 3.1 billion (2013)

Wipro
1945 US$ 7.3 billion(31 March 2014)

Zensar Technologies
1991 US$ 380 million(2014)