Founded in 1998 by Zohar Gilon and Thomas I. Unterberg, Tamar Ventures focuses on investing at any stage of a company's life cycle. The firm specializes in communications and networking, broadband technologies, enterprise applications, security software, internet infrastructure, and semiconductors. It has invested in successful startups such as Radvision, Ceragon, AVT, Allot Communications, Hotbar.com, Ex Libris, and Ezchip. Tamar Ventures is known for its active involvement in lead investments and typically invests in rounds with 3-4 other participants. The fund has a preference for startups that are 6-10 years old and typically invests in deals ranging from $10 to $50 million.