# Sentry

Sentry is an open-source application monitoring and error tracking platform, rated 4.5/5 on G2 from 500+ reviews. Profile: pricing, features, funding, and developer sentiment.

**Category:** Application monitoring and error tracking  
**Vendor:** Functional Software, Inc. (Sentry)  
**Founded:** 2008  
**HQ:** San Francisco, California, US  
**Website:** https://sentry.io  


## About

Sentry is an open-source application monitoring platform founded in 2008 by David Cramer and Chris Jennings in San Francisco. Originally built as an internal error-tracking tool at Disqus, Sentry became the de facto standard for real-time application error monitoring across web and mobile. The platform tracks exceptions, crashes, performance bottlenecks, and session replays across Python, JavaScript, Ruby, Java, Swift, Kotlin, and 30+ other SDKs. Sentry is developer-first: it integrates with GitHub to show the exact commit that introduced a bug, assigns issues to the responsible developer, and tracks resolution. The company raised $217M in Series F funding at a $3.5B valuation in 2022 and has over 4 million developers using the platform.

## Ratings

| Source | Score | Reviews |
|---|---|---|
| G2 | 4.5/5 | ~500 |
| Capterra | 4.5/5 | ~100 |

## Funding

$217M+

| Round | Amount | Date | Lead |
|---|---|---|---|
| Series A | $9M | 2015 | Accel |
| Series B | $23M | 2018 | Accel |
| Series C | $40M | 2019 | NEA |
| Series D | $60M | 2021 | Bond |
| Series E | $85M | 2021 | Ryan Denehy |
| Series F | $217M | 2022 | General Atlantic |

## Viability

Very strong. $3.5B valuation, industry-standard tool with massive developer mindshare, open-source moat. One of the safest long-term vendor choices in the observability space.

## Pricing

Sentry charges per event volume. Developer (free): 5K errors/month. Team: $26/month (50K errors, 1 user). Business: $80/month (unlimited users, advanced features). Pay-as-you-go events available. High-traffic production apps can see significant costs at scale.

| Plan | Price | Best for |
|---|---|---|
| Developer | Free | Side projects, early dev, 5K errors/month |
| Team | From $26/mo | Small eng teams, 50K+ errors/month |
| Business | From $80/mo | Growing teams, unlimited users, advanced features |
| Enterprise | Custom | Large orgs, compliance, SLAs |

## What reviewers say

_~600 G2 and Capterra reviews, 2025-2026_

**Praised:**
- GitHub integration that links errors to the exact commit introducing the bug
- SDK support for 30+ languages and frameworks out of the box
- Session replay makes it possible to reproduce bugs without reproducing them
- Developer-first UX that treats engineers as the primary user

**Complaints:**
- Pricing scales steeply with event volume for high-traffic apps
- Alert noise can be overwhelming without proper configuration
- Performance monitoring features less mature than Datadog

## Compliance

- **SOC 2:** Yes (Type II)
- **GDPR:** Yes
- **HIPAA:** Yes (Business and above with BAA)
- **SSO:** Yes (Business+)

## Integrations

- GitHub
- GitLab
- Bitbucket
- Jira
- Slack
- PagerDuty
- Vercel
- Heroku
- AWS
- Azure
- GCP
- Linear
- Asana

## FAQs

### Is Sentry open source?

Yes. Sentry is open source (BSL license for the server, MIT for SDKs). You can self-host it for free. The cloud version (sentry.io) offers convenience with a free tier and paid plans for volume and features.

### How does Sentry compare to Datadog for error tracking?

Sentry is a developer-first error tracking tool; Datadog is a broader observability platform. Sentry's developer UX, GitHub integration, and per-SDK instrumentation quality are superior for pure error tracking. Datadog wins for infrastructure monitoring and log management.


## Sources

- [Sentry website](https://sentry.io): Product and pricing
- [G2 Sentry reviews](https://www.g2.com/products/sentry/reviews): User reviews