Comparison

Evaluat vs Cavisson NetStorm

Both tools load-test applications. They go about it very differently. Here's where each one fits, written as fairly as we can manage.

Evaluat

Real-browser performance testing

Evaluat runs each virtual user in an isolated real browser and reports Core Web Vitals, Navigation Timing, and Apdex under load, with session video, network logs, and console logs for every user.

Cavisson NetStorm

Enterprise multi-protocol load testing

Cavisson NetStorm is a commercial multi-protocol performance and load engine (HTTP, REST and SOAP, WebSocket, gRPC, databases, message queues) that scales to millions of virtual users. Its Real Browser User mode records and replays in real Chrome or Firefox under load, with Lighthouse, filmstrip, and video. NetCloud is the SaaS-delivered variant.

The categorical difference: Cavisson NetStorm is an enterprise multi-protocol load tester with a Real Browser User mode that records and replays in real Chrome or Firefox. Evaluat runs a real browser for every virtual user with no scripting, and reports Core Web Vitals including INP, Apdex, and a plain-language Executive Summary as standard.

At a glance

Capability comparison

Capability	Evaluat	Cavisson NetStorm
Real browser per virtual user
No-code visual recorder
Core Web Vitals (LCP, INP, CLS, FCP) under load		No INP
Apdex score in the load report
Executive Summary
Per-session video for every user
Full network and console logs per session
Step-by-step pass/fail playback
Hosted in-region data residency		On-prem
Real Firefox as well as Chrome	On request
HTTP / API / multi-protocol load at scale
Server-side APM and diagnostics
Self-hosted / on-premise

When Cavisson NetStorm is the right call

Cavisson is genuinely the better tool in a couple of situations.

You need enterprise multi-protocol load with server-side root cause. Cavisson drives millions of virtual users across HTTP, gRPC, WebSocket, databases, and message queues, with WAN emulation and production access-log replay, and its own APM (NetDiagnostics) for code and database-level diagnostics during load. Evaluat does none of that; it tests the browser only.

You need on-premise deployment, or real Firefox as well as Chrome. Cavisson runs as a self-managed appliance for air-gapped enterprises, and its Real Browser User mode drives both Chrome and Firefox. Evaluat is cloud-hosted and Chromium-based, with Firefox on request.

When Evaluat is the right call

Evaluat is the no-code path to the full picture.

You want real-browser results with no scripting, and you measure INP. Evaluat records journeys in a real browser with no code and reports LCP, INP, CLS, FCP, and an Apdex score for the run. Cavisson's Real Browser User mode is configured through its proprietary C-based scripting, reports LCP, CLS, FCP, and Total Blocking Time rather than INP, and its Apdex lives in its separate monitoring product, not the load report.

You want a plain-language verdict, not another dashboard. Evaluat produces an Executive Summary: a verdict with a health score, the key findings ranked by severity, and recommended fixes you can hand to a stakeholder. Cavisson gives you rich dashboards and a numeric page score to interpret yourself.

You want real-browser testing without standing up an enterprise stack. Evaluat is a hosted product you point at your site, and a journey takes minutes to record. Cavisson is a powerful enterprise platform with a setup and learning curve to match.

You need data residency without running your own appliance. Evaluat keeps each test's data in the region the test ran in, as a hosted service. Cavisson's in-region answer is an on-premise appliance you run yourself.

Common questions

FAQ

Does Cavisson measure Core Web Vitals?

Cavisson's Real Browser User mode reports LCP, CLS, FCP, and Total Blocking Time and integrates Lighthouse. It does not report INP, the metric that replaced FID in Core Web Vitals. Evaluat reports LCP, INP, CLS, and FCP.

Does Cavisson have an Apdex score for load tests?

Apdex in the Cavisson suite belongs to NetVision, its real-user monitoring product, not the NetStorm load report. Evaluat reports Apdex directly from the load test.

Do I have to script Cavisson?

Cavisson is configured through its proprietary C-based scripting with correlation and parameterization. Evaluat records journeys in a real browser with no code.

What is the Executive Summary?

After a test, Evaluat produces an Executive Summary: a plain-language verdict with a health score, the most important findings ranked by severity, and recommended fixes, grounded in the run's Core Web Vitals, Apdex, error rates, and slowest URLs. It turns a dense report into a two-minute read you can share with stakeholders.

Can Evaluat do multi-protocol or API load like Cavisson?

No. Evaluat tests user-facing web applications in the real browser. Multi-protocol backend load and server-side diagnostics are a different layer, outside what Evaluat does.

Does Evaluat keep a record of every virtual user?

Yes. Every virtual user has session video, full network logs, console output, and step-by-step pass and fail status. When a run regresses you can watch the exact session that failed instead of inferring it from aggregate charts.

Is Evaluat a replacement for Cavisson?

For no-code real-browser experience under load, yes. Enterprise multi-protocol load and server-side diagnostics are outside what Evaluat does.

Keep comparing

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