Wireless & Consumer
Since the firm’s founding over 20 years ago, we have invested in some of the most innovative and significant technology companies of our time. Sigma knows what it takes to help entrepreneurs turn creative ideas into sustainable businesses.
 | BusRadio, Inc. BusRadio delivers age appropriate music and entertainment programming to students as they travel to and from school each day. Through its exclusive network of school buses, BusRadio reaches a larger concentration of teens and tweens than any other radio network. CEO: Michael Yanoff | Needham, MA | ||
 | Dexterra, Inc. Enables companies to bring mobility to their business processes and enterprise applications. By leveraging recent advances in low-cost handheld PCs, wireless networking, and .NET/Web Services technologies, Dexterra's Mobile Enterprise Platform extends the power of enterprise IT resources into the field. Chairman & CEO: Rob Loughan | Bothell, WA | ||
 | Gainspan Corporation GainSpan develops semiconductors and software for next generation battery powered wireless networked devices. The company enables the development and deployment of sensors targeted at the growing wireless needs of the Industrial and Commercial Automation markets. President & CEO: Vijay Parmar | Sunnyvale, CA | ||
 | Hanger Network, Inc. An In-Home marketing company serving top national & regional advertisers, Hanger Network In-Home Media delivers proprietary advertising, promotion & sampling programs directly into the home via its patented EcoHangers ™ through its national network of 35,000 dry cleaning stores. CEO: Bob Kantor | New York, NY | ||
 | Rave Wireless, Inc. Rave Wireless is the leading provider of reliable safety applications for mobile users. Rave builds, sells and supports the award-winning Rave Alert, Rave Guardian and Rave Campus products that deliver the only two-way safety solution complete with inbound and outbound emergency alerting. CEO: Tom Axbey | Framingham, MA | ||
 | ScanCafe, Inc. ScanCafe, the world’s premier imagery scanning and restoration service, allows consumers and enterprise to cost effectively and efficiently convert analog media into digital format. ScanCafe loads the digital images into an online gallery for sharing and creation of photo-themed products. CEO: Sam Allen | Burlingame, CA | ||
 | Sharpcast, Inc. An innovator in digital media and information synchronization, Sharpcast develops software and services that dramatically simplify the way people organize and access digital content. Sharpcast enables PCs, mobile phones and the web to work together automatically to keep photos, files and information in sync, backed up online and instantly accessible from anywhere. CEO: Gibu Thomas | Palo Alto, CA | ||
 | Vettro Corporation Leading provider of mobile field services and sales applications, which enable organizations to achieve measurable business results within their field operations. Global enterprise clients include BostonCoach, SuperShuttle, Hitachi Data Systems, Lockheed Martin, Citigroup, AIG, AT&T, and LSSi. President & CEO: Steve Horwitz | New York, NY | ||
 | Vlingo Corporation Vlingo has created a dramatically improved user interface for mobile devices using advanced speech recognition technology. The result is a personalized interface which gives users new ways to access a wide variety of mobile applications and content. CEO: Dave Grannan | Cambridge, MA | ||