PARIS-BASED ESUAL SOFTWARE on Monday announced the U.S. availability of its Internet application deployment software. The products are intended to bring the strength of desktop computing to the Internet, enabling development of applications for intranets, extranets, corporate Web sites, and e-commerce applications, the company said. Esual products include Executables, for lightweight Internet applications; Configuration Studio, for customizing the executables; and Execution Server, to speed up database queries. The company also announced the opening of its U.S. headquarters in San Francisco. Software Development