Official websites of software companies in India

Company	Headquarters	Website
3i Infotech	Mumbai, India	www.3i-infotech.com
Accenture	Dublin, Ireland	www.accenture.com
Adobe Systems	California, United States	www.adobe.com
Amazon.com	Washington, United States	www.amazon.in
BirlaSoft	Noida, India	www.birlasoft.com
Capgemini	Paris, France	www.capgemini.com
CA Technologies	New York, United States	www.ca.com
Centre for Development of Advanced Computing (C-DAC)	Pune, India	www.cdac.in
Cognizant	New Jersey, United States	www.cognizant.com
Computer Sciences Corporation(csc)	Virginia, United States	www.csc.com
CGI Group	Quebec, Canada	www.cgi.com
CMC Limited	New Delhi, India	www.cmcltd.com
Dell	Texas, United States	www.dell.com
Deloitte	New York, United States	www.deloitte.com
Ernst & Young	London, United Kingdom	www.ey.com
Genpact	New York, United States	www.genpact.com
GlobalLogic	California, United States	www.globallogic.com
Google	California, United States	www.google.com (www.google.com/about/careers)
HCL Technologies	Noida,  India	www.hcltech.com
Hexaware Technologies	Mumbai, India	www.hexaware.com
Honeywell	New Jersey, United States	www.honeywell.com
IBM	New York, United States	www.ibm.com
Idea Cellular	Mumbai, India	www.ideacellular.com
IGATE	New Jersey, United States	www.igate.com
Infosys	Bangalore, India	www.infosys.com
ITC Infotech	Bangalore, India	www.itcinfotech.com
Larsen & Toubro(L&T)	Mumbai,  India	www.larsentoubro.com
Larsen & Toubro Infotech	Mumbai, India	www.lntinfotech.com
Lenovo	North Carolina, United States Beijing, China	www.lenovo.com/in
MAQ Software	Washington, United States	www.maqsoftware.com
Micromax Mobile	Gurgaon,  India	www.micromaxinfo.com
Microsoft	Washington, United States	www.microsoft.com
Mindtree	Bangalore, India	www.mindtree.com
Mphasis	Bangalore, India	www.mphasis.com
NIIT Technologies	Noida, India	www.niit-tech.com
Nokia Solutions and Networks	Espoo, Finland	www.nsn.com
Novell	Utah, United States	www.novell.com
Oracle Corporation	California, United States	www.oracle.com
Polaris Financial Technology Limited	Chennai, India	www.polarisft.com
Red Hat	North Carolina, United States	www.redhat.com
Rediff.com	Mumbai, India	www.rediff.com
Reliance Communications	Mumbai, India	www.rcom.co.in
Reliance Industries	Mumbai, India	www.ril.com
Robert Bosch GmbH	Stuttgart, Germany	www.bosch.com
Samsung R&D Institute	Noida, India	www.samsung.com/in
SAP AG	Walldorf, Germany	www.sap.com
Siemens	Berlin and Munich, Germany	www.siemens.com
Sonata Software	Bangalore, India	www.sonata-software.com
SunGard	Pennsylvania, United States	www.sungard.com
Symantec	California, USA	www.symantec.com
Synopsys	California, United States	www.synopsys.com
Syntel	Michigan, USA	www.syntelinc.com
Tata Consultancy Services	Mumbai, India	www.tcs.com
Tech Mahindra	Mumbai, India	www.techmahindra.com
Wipro	Mumbai, India	www.wipro.com
Zensar Technologies	Pune, India	www.zensar.com

Source: wikipedia