Fiddler

Capture, inspect, and modify HTTP/S traffic to find bugs in minutes, not hours

Also known as
fiddler

What is Fiddler?

Web debugging proxy and troubleshooting tool that captures and analyzes network traffic. Fiddler Everywhere is the recommended modern solution with additional products for specialized use cases (Classic, Reporter, FiddlerCore).

Independently observed

Fiddler pricing

We don't have Fiddler's full plan breakdown yet (its pricing page resisted automated reading). Here's what we could confirm. Always check live pricing for exact numbers.

Pricing as of verify at live pricing ↗Independently observed
freemiumFree tier

Free tier available; paid plans via DevCraft bundles from $1,149/developer/year

What Fiddler does

The capabilities that matter for api development tools, normalised so it lines up with every alternative. “-” means we haven't confirmed it, not that it's missing.

Core
REST client
GraphQL support
-
gRPC support
-
Design
Mock servers
Testing
Automated / contract testing
-
Collaboration
Team collaboration & sharing
-
Docs
Doc generation
Standards
OpenAPI / spec import
-
Ops
CI integration / CLI
Independently observed

Platform & deployment

Independently observed
Platforms
  • CLI
  • Web
Deployment
  • Cloud / SaaS

Fiddler alternatives

Other api development tools we track, ranked by the same independent score.

Independent · unbought · dated

The Vioscale score: one lens on the evidence

Not user reviews and not a paid placement: a confidence-weighted blend of the independent signals below (adoption, activity, security posture, and more), which you can sort and re-weight yourself. Vendors can correct their listing but can never move their rank, and stars are weighted low as a vanity metric. It is one way to read the evidence for Fiddler, not the verdict.

Balanced composite 54 / 100
low · 48%
Signal contributions to the composite score
SignalScoreWeightContributionEvidence
Capabilities6716.001073.9
Security Posture4513.00585.0
Price Level806.00480.0
Reliability508.00400.0
Pricing Transparency258.00200.0
Integrations08.000.0-

Computed . Re-weight it by intent, or see the full method.

All data & sourcesshow ↓

Every value we hold, with its source, retrieval date, and confidence. This is the evidence behind the score: don't trust it, verify it.

Features

AttributeValueEvidence
Capabilities{"api_docs":true,"mock_server":true,"rest_client":true,"ci_integration":true}mediumsource · 2026-08-03 · 60%

Pricing

AttributeValueEvidence
Free tierYesmediumsource · 2026-08-03 · 60%
Modelcommercialmediumsource · 2026-08-03 · 70%
Price levellowmediumsource · 2026-08-03 · 60%
TransparentNomediumsource · 2026-08-03 · 60%

Reliability

AttributeValueEvidence
Status pageYesmediumsource · 2026-08-03 · 60%

Security

AttributeValueEvidence
Disclosure policyYesmediumsource · 2026-08-03 · 60%
Soc2Yeslowsource · 2026-08-03 · 48%