Software companies of the United Kingdom

Xcitium (formerly Comodo Security Solutions Inc.) is a cybersecurity company, including Zero Trust cybersecurity, based in Bloomfield, New Jersey, United States. In 2022, the company rebranded as Xcitium. Also formed from the former Comodo Security Solutions was Sectigo, a certificate lifecycle management company based in the US and founded in 2018.

British semiconductor and software design company

AVEVA Group plc is a British multinational information technology consulting company headquartered in Cambridge, England. The company started as the Computer-Aided Design Centre (or CADCentre) which was created in Cambridge in 1967 by the UK Ministry of Technology and Cambridge University.

British software developer and publisher

Software company of the United Kingdom

Finastra is a British financial software company headquartered in London. The company sells software for retail banking, transaction banking, lending, and treasury capital markets.

Ciklum is a software development and IT outsourcing company's founded in Denmark in 2002. It is headquartered in London, United Kingdom.