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Epsilon-Logic Systems is a well founded software manufacturing firm, established and incorporated in 1996. In recent years, the organization took a huge step towards the development of new technology in the area of report tools. As a result, the 
ELS-Script® software, a revolutionary report tool emerged.
In the last quarter of year 2000, Epsilon-Logic Systems released the ELS-QB ActiveX component, the only query builder component of its kind available on the market. This small component proved to be very effective in advancing the current state of the report technologies. Many companies incorporated ELS-QB in their specialized report tools, in this way, integrating a sophisticated query builder graphic interface into their applications.
Originally, ELS-QB was just one of the more than a dozen modules of the grand software system, namely the ELS-Script® report tool. After crossing a long series of development hurdles, this later product finally made it to its Introductory Release in June 2003. [Править]