20. Symantec
Core Function: Symantec is popularly known for its enterprise security software including antivirus, authentication, recovery and back up.
Market Capital: $12 billion (approx.)
Future: The developments in the BYOD trend has led to increased concern towards mobile device security. And it is not just about keeping the viruses off the devices but also locating them to erase them on a permanent basis. Here is where Symantec can take a lead.
Challenges: Symantec has found itself in the midst of challenges for a long time now. With the management firing its CEO recently, it needs to show some solid signs of recuperating and consolidating the growth markets.

19. Teradata
Core Function: Teradata has been a pioneer in data warehousing. Today it focuses on big data analytic software and hardware.
Market Capital: $13 billion (approx.)
Future: Teradata is currently in the best of places where it is being shortlisted for every big deal that is happening. The sudden wave of opting for what Teradata has been doing for ages puts it in a different place altogether.
Challenges: Teradata is sure to face a stiff competition from all corners. With everyone opting for more established software providers like SAP and Oracle to well known hardware makers such as IBM and HP, from Indian outsourcers like Wipro to open source technologies like Hadoop, all is not going well for Teradata.