Part one,two and three were focused on the top thirty startups profiled by Businessweek and Younoodle. Part four is focused on the next ten that made it to the top forty.These companies are poised to grow beyond their geographical boundaries.

Positive Energy, Inc
Positive Energy, Inc. provides energy efficiency and conservation solutions. The company offers home energy report, which motivates customers to participate in utility programs and reduce consumption; energy Websites; carbon calculator that is designed to educate customers about carbon emissions; insight engine services; and application management interface analytics platform. It also provides energy efficiency programs; and demand response, time of use, and other programs. The company was incorporated in 2007 and is based in Arlington, Virginia.Mr. Daniel Yates and Mr. Alex Laskey are Co-Founders

Raydiance, Inc.
Raydiance, Inc. develops and produces commercial-grade ultrafast laser by integrating photonic, computing, and software technologies. The company offers Smart Light MD, a software-controlled ultrafast laser for manufacturing cardiovascular stents, drug delivery systems, guide wires, valves, and needles; and femtosecond fiber laser for the U.S. Department of the Navy. Its products has applications in nitinol stents manufacturing, thin film photovoltaic cells machining, microelectronics, machining novel materials, noninvasive Lasik surgery, tissue transplant, materials interrogation, dermatology, dentistry, genomics, heart diseases, fighting diseases and nanotechnology.Founded in 2004.

Proclivity Systems, Inc.
Proclivity Systems, Inc. develops revenue optimization platform and consumer behavior bank for marketers and merchandisers. It offers Proclivity Mail, a Web-based application module that leverages the consumer behavior bank to create targeted email programs. The company’s consumer behavior bank also provides information to clients about their customers’ shopping interests, purchasing likelihood, and level of expenditure for an offer. It serves retail, travel and hospitality, e-commerce, financial services, and news and media sectors. The company was founded in 2006 and is based in New York, New York.

SecondMarket, Inc.
SecondMarket, Inc. operates an online trading platform. It provides a centralized marketplace for illiquid assets, including auction-rate securities, bankruptcy claims, collateralized debt obligations, structured products, limited partnership interests, private company securities, residential and commercial mortgage-backed securities, warrants and restricted stocks, and whole loans. The company serves financial institutions, hedge funds, private equity firms, mutual funds, corporations, and other institutional and accredited investors.
Founded in 2004.

Scribd, Inc. operates as a social publishing company for readers, authors, and publishers. It enables users to publish, discover, and discuss original writings and documents. The company provides iPaper, a document reader solution that enables users to upload and share their original works on or other Websites, and transforms PDF, Word, PowerPoint, and other file formats into a Web display. It also offers books, brochures and catalogs, illustrations and maps, magazines and newspapers, puzzles and games, recipes and menus, research works, resumes and CVs, school works, sheet music and lyrics, how-to-guides and manuals, business and law materials, and creative writings.

NetPickle, Inc., operates, creates and distributes widgets and applications on the social Web. The company offers customized branding and advertising opportunities on various social networks; and RockYou, an advertising platform for brands and advertisers to reach application users. Its widgets include photo slideshows, glitter text, and voicemail accessories that enable people to refresh their online style. NetPickle, Inc. was founded in 2006 and is based in Redwood City, California.Founded in 2006.

PBworks, Inc
Coceve, Inc., doing business as PBworks, Inc., provides hosted collaboration solutions for law, creative service, professional service, and educational enterprises in the United States. It provides hosted business and educational workspaces; and partner/client share and collaboration, project management, intranet, extranet, knowledge management, and classroom collaboration services, as well as acts as host of other business processes and workflows. The company was founded in 2005 and is based in San Mateo, California

Pelago, Inc. provides Whrrl, which enables to connect to people, places, and events around through an integrated Web/mobile application. Whirl v2.0, an application for phone and bipod touch that enables people to capture and share the moments of their lives, as they happen, in story form. Through location, photos and text updates, users can easily turn everyday life experiences into lasting stories that can be remembered, organized and shared. Each user controls exactly who can view their story, ranging from public to private, and includes the option to broadcast status updates on Face book and Twitter.The company was founded in 2006 and is based in Seattle, Washington.

Palantir Technologies
Palantir Technologies, Inc. designs and delivers platforms for integrating, visualizing, and analyzing information. The company’s products include Palantir Government, a platform that integrates structured and unstructured data sources, and facilitates collaboration in intelligence, defense, and law enforcement communities; and Palantir Finance, an analytical platform for hedge funds and financial institutions. It serves organizations in the United States and internationally. The company was founded in 2004 and is based in Palo Alto, California.

Quebarato is a retail directory of products that that serves the Latin America Market. But they have versions for America that categorized by cities.The directory is in spanish.

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