Diffblue

Diffblue Ltd is a spin-out from University of Oxford whose Cover product uses AI to automatically write unit tests for Java code.

Diffblue was founded by Daniel Kroening and Peter Schrammel in 2016,[2] and Mathew Lodge became CEO in July 2019[3] In 2017, Diffblue raised £17.3 million in Series A funding led by Goldman Sachs and Oxford Sciences Innovation.

[4] In 2020, Diffblue released a freeware version, Cover Community Edition.

[5] Diffblue raised $7m in January 2022 in a round led by venture capitalist IP Group,[6] and a further $8m in November 2022 in a round led by AlbionVC.

[7] Diffblue customers include Goldman Sachs, S&P Global, Citi, JP Morgan and AWS.