When IBM chose Virginia Rometty to succeed Sam Palmisano Oct. 25, they made her the first female CEO in the company's 100-year history. The two largest tech companies in the U.S. will now be headed by women. Meg Whitman became CEO of Hewlett-Packard in September. It would seem the tech companies are leading the way for U.S. corporations, but there are only 18 women heading Fortune 500 companies right now. That's more than there has ever been, even though the number seems small.

Rometty takes over on Jan. 1, 2012, and that makes Whitman the top choice in this list of influential women tech CEO's. She turned eBay into a wildly successful company during her decade at the helm, and even ran for California governor.

Tell us in the comments if you think any of these woman would be a good governor or even president. Here's the top 10 women CEO's of tech companies.