Sentry is application monitoring and error tracking software. The product covers error monitoring, logs, session replay, tracing, profiling, cron monitoring, uptime monitoring, and a set of AI debugging tools (Seer, Seer Autofix, Seer Agent, AI Code Review).

Used by 4M developers and 150K organizations across 146 countries, processing 790B events per month. Customers include GitHub, Disney, Atlassian, Linear, Vercel, Cloudflare, Slack, Microsoft, Instacart, Lyft, Anthropic, and Cursor. Started as an open-source project; the core repo remains open source.

200+ employees across offices in San Francisco, Seattle, Toronto, and Vienna. $217M raised across 6 rounds.

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