Your time travel debugger

Record and replay applications with familiar browser dev tools.

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Replay

Replay

As simple as a screen recorder and as powerful as browser developer tools, Replay provides the unparalleled ability to understand software. Record, collaborate and inspect. Through time travel debugging, users can understand the state of their software at any point in time.

Time travel
Debugger
2021
Ongoing

Replay

Founding Story

Replay’s founders, Jason Laster and Brian Hackett, believe that people can only understand what they can see. If you cannot see what your software is doing, you cannot understand it. Through Replay, the pair set out to make software easier to understand, whether you are writing your first application or challenging what’s possible.

From research and development at Mozilla to changing the way people think about software development, the journey has been long and hugely rewarding. With Replay, software development is faster, more accessible, more inclusive and more exciting.

Backed by
a16z

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#081120
Fuschia
#F02D5E
Blue
#01ACFD
White
#FFFFFF

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How it works graphics

“I just want to thank everyone for the hard work. It’s incredible how well I got to know your team working so closely with each other. I could not think more highly of all of you and the brilliant work you do.”

Jason Laster
CEO & Co-Founder
Replay
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