Current: Senior vice president of worldwide sales, marketing and business development, Linksys division of Cisco
Former: co-founder and CEO of Linksys
Impact: In 1988 Tsao and her husband had the idea for a device that would let multiple PCs share a single printer, and launched Linksys in their garage. In 2003 the company entered the wireless space, and shortly after Cisco acquired Linksys and made Janie and her husband executives at the company. Tsao was the inaugural recipient of the Anita Borg Institute Women of Vision Award for Leadership, which was awarded to her for her forward vision and ability to spot and capitalize on the next big trend, according to the institute.
Current: President and member, board of directors, Oracle
Former: CFO, executive vice president, senior vice president, Oracle; various positions with financial institutions including Donaldson, Lufkin & Jenrette
Impact: Oracle founder Larry Ellison has credited Catz with his company's successful takeover of PeopleSoft, an 18-month ordeal that put Oracle as the second largest business software maker. Catz was No. 11 on Fortune's list of the 50 Most Powerful Women in 2010.
[ See also: Coach like a pro: Why women in IT need mentors ]