Undo (company)

Software debugging company in the United Kingdom UndoTypePrivateIndustryComputer softwareFounded2005FounderGreg Law Julian SmithHeadquarters Cambridge, UKKey peopleGreg Law (CEO) Rod Favaron (chair)Websiteundo.io Undo is a software debugging company based in Cambridge, UK. Originally known for its time travel debugging technology, the Undo software makes it possible for software engineering teams and AI coding assistants to perform software issue root cause analysis by recording the execution of applications, enabling deterministic replay and inspection of program behavior. History Undo was initially bootstrapped in 2005 by Greg Law and Julian Smith out of Law's garden shed in Cambridge. Law and Smith developed the core technology that would eventually become UDB (formerly UndoDB), a reversible debugger for Linux software. LiveRecorder was then developed based on UndoDB to enable development teams to record and replay the execution of software programs. In 2012, Undo secured its initial seed funding. It closed a $3.3 million Series A funding round in 2016, and a $14 million Series B in 2018. In 2026, Undo announced they had raised $37 million in new funding, led by Elsewhere Partne