Arcontech Group plc develops and sells proprietary software through its subsidiaries across the United Kingdom, Europe, Africa, North America, Australasia, and Asia Pacific. Its products include Excelerator Desktop, CityVision, and the CityVision Multi-Vendor Contribution System, along with Excelerator, CityVision Cache, CityVision Symbol Mapper, and CityVision API. The company also provides computer consultancy services. Formerly Knowledge Technology Solutions PLC, it changed its name to Arcontech Group plc in February 2009. Founded in 1979, it is based in London, United Kingdom.