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Acorn Energy, Inc., together with its subsidiaries, develops and markets wireless remote monitoring and control systems for various markets in the United States and internationally. It operates in two segments, Power Generation (PG) Monitoring and Cathodic Protection (CP) Monitoring. The PG segment provides wireless remote monitoring and control systems, and services for critical assets, which include stand-by power generators, pumps, pumpjacks, light towers, turbines, compressors, fire pumps, and other industrial equipment; and Internet of Things applications. The CP segment offers remote monitoring and control products for cathodic protection systems utilized in gas pipelines for gas utilities market and pipeline operators. The company was incorporated in 1986 and is based in Wilmington, Delaware.

Bridgeline Digital, Inc. operates as a marketing technology company in the United States, Canada, and internationally. The company offers HawkSearch, a site search, recommendation, and personalization application for marketers, merchandisers, and developers; Celebros Search, a commerce-oriented site search product that provides natural language processing with artificial intelligence; and Woorank, a Search Engine Optimization (SEO) audit tool that generates an instant performance audit of the site's technical, on-page, and off-page SEO. It also provides Bridgeline TruPresence, a web content management and eCommerce platform to support the needs of multi-unit organizations and franchises; Bridgeline Unbound, a technology suite that empower marketers to easily manage their digital experiences and create personalized customer journeys; and OrchestraCMS, a digital experience platform that enables development of custom solutions, third-party integrations, and delivery of digital transformation initiatives on the Salesforce platform. In addition, the company offers digital engagement services comprising digital strategy, web design and web development, usability engineering, information architecture, and SEO, as well as hosting services. It serves vertical markets, such as industrial distributors and wholesalers, franchises and enterprises, manufacturers, eCommerce retailers, health services and life sciences, technology, credit unions and banks, and associations and foundations through its direct sales force. The company was formerly known as Bridgeline Software, Inc. Bridgeline Digital, Inc. was incorporated in 2000 and is based in Woburn, Massachusetts.

Dynasil Corporation of America develops, markets, manufactures, and sells detection, sensing, and analysis technology and optical components in the United States, Asia, Europe, and internationally. It operates through Optics, Innovation and Development, and Biomedical segments. The Optics segment supplies synthetic crystals, optical materials, components, and coatings that are used in devices, such as baggage scanners, medical imaging systems, optical instruments, lasers, analytical instruments, automotive components, semiconductor/electronic devices, spacecraft/aircraft components, and advertising displays in the medical, industrial, and homeland security/defense sectors. The Innovation and Development segment develops advanced technology in materials, sensors, and prototype instruments that detect or measure radiation, light, magnetism, or sound for use in security, medical, and industrial applications. The Biomedical segment engages in the development of tissue sealant products. The company distributes its products through direct sales and marketing staff, as well as through manufacturer's representatives and distributors. Dynasil Corporation of America was founded in 1960 and is headquartered in Newton, Massachusetts.

Rubicon Technology, Inc. provides monocrystalline sapphire for applications in optical and industrial systems in North America, Asia, and internationally. The company offers optical and industrial sapphire products in various shapes and sizes, including sheets, rods, tubes, core, ingots, and prisms for a range of end markets comprising defense and aerospace, specialty lighting, instrumentation, sensors and detectors, semiconductor process equipment, electronic substrates, medical, and laser applications. It serves defense subcontractors, industrial manufacturers, fabricators, and resellers. The company was incorporated in 2001 and is based in Bensenville, Illinois.

usell.com, Inc. operates as a market maker of used smartphones. It acquires products from individual consumers through its uSell.com Website, as well as from various carriers, big box retailers, and manufacturers through its subsidiary, We Sell Cellular. The company sells its devices to professional buyers, such as brick and mortar retailers, online retailers, large and small wholesalers, small repair shops, large refurbishing providers, and insurance companies, as well as directly to consumers through third party e-commerce platforms. The company was formerly known as Upstream Worldwide, Inc. and changed its name to uSell.com, Inc. in July 2012. uSell.com, Inc. was incorporated in 2003 and is headquartered in New York, New York.