CASR
CASR: A self-hosted toolkit for organizing, analyzing, and prioritizing native and multi-language crashes. Ranked #31 of 63 in Crash Reporting Software by our editors (5.7/10); pricing: Free plan; best for security and fuzzing teams triaging native crashes.
At a glance
- Editor score5.7 / 10
- PricingFree plan
- Best forSecurity and fuzzing teams triaging native crashes
- Free planYes
- Paid fromFree
- Facts checked20 Oct 2026
Where it wins
- Handles coredumps, sanitizer output, GDB output, and multiple languages
- Clusters related crashes and estimates severity with diagnostic context
- Automates AFL++ and libFuzzer triage with SARIF and DefectDojo support
Where it doesn't
- Deployment is self-hosted or desktop rather than a hosted subscription service
- macOS support is described as experimental
- Support channels are limited to community resources and documentation
Our verdict on CASR
CASR is an open-source toolkit for collecting and analyzing software crash reports. It is aimed at organizations developing, testing, certifying, or securing software, including teams working with native applications and fuzzing workflows. The project processes Linux coredumps, sanitizer and debugger output, and reports from C/C++, C#, Go, Java, JavaScript, Lua, Python, and Rust. Its free, open-source model suits teams that want to operate crash analysis within their own environments.
The standout capability is the breadth of crash evidence CASR can preserve and organize. Reports can include stack traces, registers, disassembly, source fragments, environment details, and severity estimates. Deduplication and clustering help group related failures, while terminal viewing and SARIF conversion support both local investigation and workflow integration. Automated triage for AFL++ and libFuzzer extends the toolkit toward continuous fuzzing operations rather than one-off debugging.
Platform and ecosystem fit are strongest for Linux-based security workflows. CASR supports integrations with Zabbix and DefectDojo, and it can upload reports to DefectDojo for vulnerability-management processes. Deployment is self-hosted or desktop, with Linux documented and macOS support described as experimental. Teams choosing CASR should be comfortable operating open-source tooling and relying on community and documentation support. Organizations seeking a hosted crash-reporting service, broader managed operations, or a fully established cross-platform experience should consider alternatives.
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CASR pricing
CASR fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| Mobile crash support | Not verified |
| Web app support | Not verified |
| Desktop app support | Not verified |
| Exception grouping | Yes |
| Stack-trace diagnostics | Yes |
| Monthly event limit | Not verified |
| Deployment | Self-hosted, Desktop |
| Platforms | Linux, macOS |
| Support | Community, Docs |
| Built for | Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 4 integrations: Zabbix, DefectDojo, AFL++, libFuzzer |
| Pricing | Free plan |
| Website | github.com |
| Facts checked | 20 Oct 2026 |
CASR integrations
CASR lists 4 integrations on its own site.
- Zabbix
- DefectDojo
- AFL++
- libFuzzer
Alternatives to CASR
- Firebase CrashlyticsA no-cost Firebase service for grouping crashes, tracking releases, and alerting teams.9.3
- BugSnagBroad error, release, and performance monitoring with cloud or self-hosted deployment.8.8
- BacktraceA broad crash-operations platform for native, mobile, PC, console, and server software.8.7
Used CASR? Be the first to review it
The editor score above is our own research. What this page doesn't have yet is a reader's view — what you used CASR for, what worked and what didn't. No stars are seeded and no review is paid for; an editor reads every one before it appears.
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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