SISP TECHNOLOGIES LTD | 55 followers on LinkedIn. SISP Technologies is the business bringing CompressionX’s lossless compression product to the market! | SISP Technologies Limited is a revolutionary disruptive technology lossless compression company with global ambition, specialising in the storage and transmission of data. SISP have created an exciting new digital compression technology based on a revolutionary algorithm which will revolutionise everything we think we know about existing Data Storage and Data Transfer. SISP Technologies Limited is a UK technology company located in the heart of London's technology hub.