Resonate Group Limited is a British software, technology and services company. Prior to September 2016, it was called DeltaRail Group Limited.

The company was formed from the Rail business of AEA Technology plc which was acquired as part of a secondary private equity portfolio sale to Vision Capital in 2006. On 21 January 2015, the four executive directors of the company acquired the business out of private equity ownership. The Resonate Group