Sentry got its start back in 2012 as an open-source error tracking project, and it’s grown into one of the most widely adopted application monitoring platforms in the industry. Headquartered in San Francisco, the company helps developers catch bugs, track performance bottlenecks, and resolve issues before users even notice them.
What sets Sentry apart is its developer-first approach. It doesn’t just log errors — it gives you the full stack trace, breadcrumbs of user actions leading up to a crash, and release-level tracking so you know exactly which deploy introduced a problem. The platform supports over 100 languages and frameworks, from Python and JavaScript to mobile SDKs for iOS and Android.
By 2023, Sentry had raised over $200 million in funding, with a Series E round led by Accel that valued the company at around $3 billion. More than 100,000 organizations rely on Sentry, including companies like Disney, Microsoft, and Cloudflare. They process billions of events every month.
Sentry also maintains a strong open-source commitment. Their core SDK libraries are open source, and they’ve been transparent about their business model, which pairs a free tier with paid plans for teams that need higher volume and advanced features. It’s a tool that many developers install almost reflexively when starting a new project — and for good reason.
