When was linear.app built?
Analyzed 8 November 2026. Re-analyze
Estimated launch
April 2019
Several independent sources agree on this date.
BuiltWhen verified that linear.app launched in April 2019 (76% confidence), with domain registration recorded in May 2018.
- Website age
- ~7.5 years
- From estimated launch
- Domain registered
- May 2018
- Not the launch date
- First evidence
- April 2019
- Internet Archive (Wayback Machine)
- Current version
- Between October and November 2025
- Possible major redesign
History at a glance
The domain and the website have separate lives. Website age is measured from the launch, not from registration.
Timeline
May 2018
Domain registered
The domain was registered. This is not the same as the website launching.
Confirmed
October 2018 – April 2019
Between November and December 2019
Between June and July 2022
Between November and December 2023
Between October and November 2025
November 2026
Built with today
Detected on the live homepage — it runs on Next.js. Select a technology to see the evidence.
- Hosting / CDN
Cloudflare, 100% confidence. Show evidence.
- Server header is cloudflare
- cf-ray response header
- 100% detection confidence
- Framework
Next.jssince 2019, 99% confidence. Show evidence.
- Loads bundles from /_next/static/
- x-nextjs-cache response header
- 99% detection confidence
- JavaScript library
Reactsince 2019, 89% confidence. Show evidence.
- Implied by Next.js
- 89% detection confidence
Why we think it launched in 20194 pieces of evidence, each linked to its source
- First archived copy of the website: April 2019.
- Domain registered: May 2018 (11 months earlier).
- Oldest page date in the sitemap: July 2020 — consistent with the estimate.
May 2018
Domain registered
The domain's current registration began on this date. A website can only launch after this, but often launches much later.
Sets the earliest possible dateRDAP registry dataView source
April 2019
First archived copy of the website
The earliest successful snapshot of the homepage showing real website content in the Internet Archive.
The estimate is based on thisInternet Archive (Wayback Machine)View source
April 2019
Next.js first seen
Next.js appears in archived copies of the site from this date.
Background onlyInternet Archive (Wayback Machine)
July 2020
Oldest page date in the sitemap
The oldest "last modified" date among 1007 sitemap entries.
Agrees with the estimateXML sitemapView source
What we checked
- Domain registry (RDAP)Checked
- Internet Archive indexChecked
- Live websiteChecked
- Archived page comparisonChecked
92 months of archived homepage copies; 31 compared in detail. BuiltWhen estimates from observable evidence and can be wrong. How estimates work
Domain registrationRegistered May 2018 · CloudFlare, Inc.
- Registered
- 9 May 2018
- Registration expires
- 9 May 2030
- Registry record updated
- 9 March 2026
- Registrar
- CloudFlare, Inc.
- Nameservers
- tim.ns.cloudflare.com, zara.ns.cloudflare.com
Public registry data via RDAP. Registrant details are never collected.