About
We got tired of arguing with graphs.
Fenwright is nineteen people in one office in Aldgate. Three of us spent years on call before we built this, and we still answer the support queue ourselves.
How it started
In the spring of 2021, a payments company in London lost ninety minutes of checkout traffic at two in the morning. The incident review ran for four hours. Everyone had the dashboards; nobody could say what the order queue held at 02:18, when the workers started failing. Three engineers gave three answers, and all of them were sincere.
Two of those engineers, and the SRE who chaired the review, left that summer to build the tool they had wanted in the room: something that keeps every event and can tell you, exactly and repeatably, what the system held at any moment.
We still price it the way we wanted to buy it. You pay for what you record and how long you keep it. Looking is free, because a tool that charges for looking teaches people not to.
Who you will talk to
No account managers. The people who build the product answer the email.
-
Ada Lindqvist
Co-founder, recorder and SDKs
Ran on-call for a card processor for six years.
-
Owen Mbeki
Co-founder, replay engine
Wrote the fold that every replay runs through.
-
Rhea Castellanos
Co-founder, customer engineering
Answers the first support email of every account.
-
Jonas Brandt
Security and compliance
Owns the SOC 2 audit and the self-hosted edition.
Five years in five lines
- 2021 A four-hour incident review, one unanswerable question, and a weekend prototype that recorded a single queue.
- 2022 First paying team. Node and Python recorders. Bisect ships after a customer asked for it three times.
- 2024 Go and Java recorders, the Frankfurt region, and the first self-hosted Enterprise install.
- 2026 340 teams, 1.2 million hours replayed, and still 19 people in one office in Aldgate.
Come and see the office
We are at Aldgate Works, 14 Goulston Street, London. Enterprise evaluations often start with a morning here and a replay of your own incident.
npm install @fenwright/recorder