Sentry is a provider of open-source and hosted error monitoring software that helps all software teams discover, triage, and prioritize errors in real-time.

Sentry helps developers see what actually matters, solve quicker, and learn continuously about their applications - from the frontend to the backend. 

Sentry was founded in 2011 by David Cramer & Chris Jennings and is based in San Francisco, California, with an additional office in Vienna, Austria.


Sentry empowers any developer or development team to solve issues in production code by using one tool to monitor for errors, performance, and health across mobile, desktop, and IoT, and across any industry or vertical.


Sentry has launched a new product called Performance Monitoring, a frontend performance monitoring software for Python and Javascript. Sentry now processes 790+ billion events per month.


Sentry is trusted by more than 3.5 million developers and 85,000 organizations worldwide, including many of the world’s best-known companies like Disney, Peloton, Cloudflare, Eventbrite, Slack, Supercell, and Rockstar Games.


Sentry is backed by Accel, New Enterprise Associates, BOND, K5 Global, and others. The company raised $90M in Series E round on May 04, 2022. This brings Sentry's total funding to $216.5M to date. The latest round more than tripled the company's valuation to over $3B post-money. Sentry was last valued at $1B from their Series D raised in Feb 2021.



  • Year founded: 2011
  • Funding Info: $216.5M over 5 Rounds (Latest Funding Type: Series E)
  • Yearly Revenue: NA
  • Employee Size: 201-500
  • Business Valuation: Valued at over $3B as of May 04, 2022
  • City/Town: San Francisco
  • State: California
  • Country: United States
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