# replay.io: Information technology & services, San Francisco, United States

> replay.io: Replay.io is a technology startup based in San Francisco, focused on innovative browser development tools. Based in San Francisco, United States.

Source: https://millionrounds.com/startup/replay-io (Millionrounds; every figure on the page links to its filing or article)

United States · [Information technology & services startup](https://millionrounds.com/companies)

# replay.io

Replay.io is a technology startup based in San Francisco, focused on innovative browser development tools.

Funding reported Last round: Series A

Information technology & services San Francisco, United States

Company summary

- **Founded:** 2021 5 years old
- **Team:** 13 11 to 50 people
- **Funding reported:** $19M in dollars
- **Last round:** Series A Dec 2022

How sure we are

- ✓ **Listed** We know it exists and what it does
- 2 **Funding reported** A company dataset reports a raise
- 3 **Observed** A filing or a dated announcement confirms a round

No round for replay.io has been confirmed by a filing or an announcement yet, so nothing here counts toward an investor's record. [How we decide](https://millionrounds.com/methodology)

## About replay.io

Replay.io is a technology startup based in San Francisco, focused on innovative browser development tools.

Founded in 2020, the company specializes in deterministic debugging and time-travel debugging, allowing developers to record, replay, and inspect the execution history of web applications. This approach provides a detailed view of every DOM change, network request, and state update, enabling developers to address issues with precision. The platform offers several key services, including deterministic time-travel debugging, retroactive debugging, and collaborative issue investigation. It also features an AI-driven testing service that automates the discovery of user journeys and generates detailed bug reports. Replay.io integrates seamlessly with major continuous integration environments, enhancing the debugging process for software developers and Quality Assurance teams. Replay.io's product ecosystem includes tools like Replay DevTools, Replay Viewer, and Replay CI Agent, all designed to improve the software development workflow. The company targets software developers, QA teams, and enterprise development teams, providing solutions that streamline debugging and enhance software quality.

## What company datasets say replay.io raised

Funding, as reported

Reported in all **$19M** in dollars

Rounds **2**

Last round **Series A**

Last round size **$13M**

Last round date **Dec 2022**

Investors listed **10**

## Founders and team

From replay.io's own website: 2 on the team.

- **Brian Hackett** CEO
- **Thomas Daly** Head of Product

## On a portfolio page

Investors who name them

- [developers.vc](https://millionrounds.com/fund/developers-vc)

Each firm lists replay.io on its own website. That is the firm's claim, a weaker thing than a round we watched, but a named source.

## The company, in detail

What they build

Known for

session replay for support source map visualization ai code writers compatibility cross-platform debugging information technology & services control dependency analysis network monitor ci integration web development open source integration replay devtools bug reproduction automation cross-browser support reproducibility for flaky tests react component inspection security and privacy

Built with from their website

Amazon SES Google Tag Manager Twitter Analytics Linkedin Insight Tag YouTube Google Workspace CloudFlare Viewport Meta LinkedIn Ads Lucide

+8 more

Amazon Simple Email Service webpack Amazon S3 Google Meet Apollo.io Headless UI Twilio SendGrid Email Marketing Campaigns Priority Hints

- **Sector:** Information technology & services
- **Industry code:** NAICS 54151, 513210, SIC 7375, 7372
- **Region:** California
- **Full record:** [Every detail in the company directory](https://millionrounds.com/directory/replay)

## Information technology & services in United States

Startups like it

- [**Databricks** San Francisco · founded 2013 *Raised*](https://millionrounds.com/company/databricks)
- [**Waymo** Mountain View · founded 2009 *Raised*](https://millionrounds.com/company/waymo)
- [**Crusoe** Denver · founded 2018 *Raised*](https://millionrounds.com/company/crusoe)
- [**Cursor** San Francisco · founded 2017 *Raised*](https://millionrounds.com/company/cursor)
- [**Thinking Machines Lab** San Francisco *Raised*](https://millionrounds.com/company/thinking-machines-lab)
- [**Cognition** San Francisco *Raised*](https://millionrounds.com/company/cognition)
- [**Polymarket** New York · founded 2020 *Raised*](https://millionrounds.com/company/polymarket)
- [**Harvey** San Francisco · founded 2022 *Raised*](https://millionrounds.com/company/harvey)

## Is this your company?

Add your raise, your deck and your story, and put replay.io in front of investors. Or tell us what we have wrong.

[List your startup](https://millionrounds.com/list-your-startup)[Send a correction](https://millionrounds.com/corrections)