Undo is the leading Software Failure Replay platform provider

Undo allows software engineering teams building complex software to resolve their software defects faster, accelerate product delivery, and streamline their engineering process.

We help our customers focus on the things that matter by reducing the time, pain and effort involved in building the world’s most complex software.

Undo is based in San Francisco (USA) and Cambridge (UK).

Undo Team Photo
Pair programming

Who we are

Undo is a fast-growing, venture-backed technology start-up based in San Francisco and Cambridge, UK. Undo was founded by Greg Law and Julian Smith who worked on evenings and weekends in Greg's garden shed to create a better debugging tool than the commercial and open source solutions which had frustrated them for many years.

Following receipt of seed funding in 2012, the company is now the leading Software Failure Replay platform provider.

Undo.io Investor logos

Our investors

Undo is backed by an experienced group of investors including Cambridge Innovation Capital (CIC), the Cambridge Angels group, Rockspring, Martlet, Sir Peter Michael and Jaan Tallinn. New investors include Global Brain Corporation and Parkwalk Advisors.


2017 Best Investment in Disruptive Tech

UKBAA Awards

2017 UK Innovation and Entrepreneurship

UK IT Industry Awards

2016 FinTech Innovation Lab winner

FinTech Innovation Lab

Cool Vendor in Application Development

Gartner Cool Vendor

Cambridge Top Innovation 2016

Cambridge News

We are making Undo a place to work of which we can all be really proud.

About Undo