Front Surface Mirror
Front Surface Mirror for Binocular Astronomy, video projection, and other optical applications where crisp, distortion free imaging is required
http://www.fsmirrors.com

Periscope Design
periscope is an interactive design and online marketing agency in London, specialising in website design, marketing and communications, content management systems (CMS), e-commerce, e-mail marketing, database development and search engine optimisation and promotion.
http://www.periscope.co.uk/

EuroWordNet
Multilingual database containing ontological and semantic relations : Objectives, Samples and License. Presentation, Screenshots and manuals of tools to exploit and represent this database (Polaris and Periscope). Free acces for spanish.
http://www.illc.uva.nl/EuroWordNet/

Papyrus Software
Windows shareware and freeware for internet and software developers utilities
http://www.papyrussoftware.com/

Electro-Optical System Co., Ltd.
Korean manufacturer of thermal imaging systems, military fire control equipment, night vision viewers and telescopes, military low vision binoculars and optics, and daytime periscopes, optical modules and parts.
http://www.eosystem.com/