Naperville, Illinois-based Spyglass Inc, which is the source of licenses to the Mosaic Internet browser, yesterday announced a definitive agreement to acquire SurfWatch Software Inc, Los Altos, California developer of Internet filtering and parental control software, and will pay $12.6m in shares for the company. Spyglass reckons that SurfWatch’s filtering software is the industry-standard technology for blocking access to unwanted material on the Internet. SurfWatch employees and operations will become a product group of Spyglass and the core of its West Coast research and development organization. SurfWatch reckons that while parental control has so far generated all the attention, its filter technology has tremendous potential in enterprise applications too. Spyglass also acquired OS Technologies Corp, developing and licensing World Wide Web conferencing and forum technologies; no terms were given.