Longworth Venture Partners
Longworth Venture Partners is a Boston-based venture capital firm that invests in early-stage software, Internet and media companies. For over twenty years, the Longworth team has founded, built and led investments in some of the most innovative and successful technology companies. The firm combines a proven track record of entrepreneurial and operating success with top venture investing performance to support entrepreneurs in building the next generation of technology leaders.

Hummer Winblad
Hummer Winblad was created in 1989 as the first venture capital firm focused exclusively on software. As the industry has grown from PC software to enterprise computing to Internet applications, Hummer Winblad has been at the forefront—funding the entrepreneurs and the ideas that helped define these markets.

Hummer Winblad believes that innovative software will be the core driver of competitive advantage within companies, will underlie valuable services to consumers and corporations, and will change the economics of entire industries. The firm provides the capital, experience, and vision that will help companies become leaders in this new software economy.

Masthead Ventures
Masthead Venture Partners is a venture capital firm focusing on early-stage technology companies, primarily in software, Internet infrastructure, communications technology, and IT-intensive life sciences. The Masthead approach leverages the experience and networks of its partners, who have spent an aggregate of more than ten decades operating and financing companies from founding to public offerings. Masthead seeks to invest in and build exceptional technology-based companies that solve big problems in rapidly growing markets, by matching great technologies with unmet market needs, assembling outstanding management teams, and taking an active role in driving the growth of the enterprise.

Navigator Technology Ventures
Navigator Technology Ventures is an early-stage, technology venture capital firm that seeks to fund technology-rich start-ups. NTV is an affiliate of Draper Laboratory of Cambridge, MA. With the assistance of Draper Laboratory, NTV invests in unique, highly proprietary technologies. Among NTV’s portfolio companies are Sionex Corp.; Polychromix, Inc.; Actuality Systems, Inc.; Sand Video, Inc.; PLEJ, Inc.; Aircuity, Inc.; FQSI, Inc.; Polnox Corp.; and Histometrix, Inc.

Common Angels
CommonAngels is 50 of Boston ’s leading technology and business professionals who take a hands-on approach to early-stage software and technology investing. Founded in early 1998 and named after Boston ’s historic public meeting grounds, CommonAngels began as a small group of CEOs and founders of software companies—who were also founders of the Massachusetts Software Council—wanting to help entrepreneurs with capital and expertise. CommonAngels seeks to both bridge the growing capital gap between individual investors and first-round traditional venture capital, and to make independent investments. To date, CommonAngels has funded 25 companies with more than $25 million of CommonAngels’ funds and $100 million from co-investors.

In addition to VCs, Tizor investors include individuals who are known leaders in the security, identity management and storage industries.