Topspin Partners is a venture capital and private equity investment firm formed in August 2000. The firm invests out of $215 million fund that was closed in the Fall of 2000. Topspin is the successor fund to the Long Island Venture Fund, a successful venture capital fund which began investing in 1995. The firm is an affiliate of Renaissance technologies, a well-known manager of liquid assets.

WHI Ventures Fund I, L.L.C. is an affiliate of William Harris Investors, Inc., a registered investment advisor. The Chicago-based firm focuses on "engineering-driven" cultures such as software teams, firmware, systems or research engineers, as well as medical and life science businesses. The fund typically invests in four to six companies each year, often as the lead investor. Initial investments typically range from $250,000 to $3 million. The firm looks for exceptional management teams building businesses in markets poised for rapid growth.

The Rockefeller Foundation is a knowledge-based, global foundation with a commitment to enrich and sustain the lives and livelihoods of poor and excluded people throughout the world. Its Program Venture Experiment (ProVenEx) seeks to catalyze private-sector investments in areas that will benefit poor and excluded people. The Foundation makes philanthropically-motivated investments structured using market principles and works to grow businesses that can address the critical needs of poor communities: their health, food, work and creative expression.

Motorola Ventures (MV) is the global, strategic venture capital investment arm of Motorola, Inc. MV invests at all stages in developing companies of strategic value to Motorola to accelerate access to new technologies, markets and talent.