Available worldwide · Popular in: US
What is Fiddler?
A web debugging tool that captures, logs, and enables inspection and modification of HTTP(S) requests and responses flowing between your device and the internet.
Fiddler pricing
Plans, per-tier features and add-ons, dated and linked to live pricing. Pricing changes often; always verify at source before you rely on it.
From $7/month for Fiddler Everywhere. Free tier available. 10-day trial.
Fiddler Everywhere
- Capture and modify HTTP/S traffic
- API composer for request editing
Fiddler Classic
Free- Manually inspect and debug Windows HTTP/S traffic
- Basic Composer support
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.
- REST client
- ✓
- GraphQL support
- -
- gRPC support
- -
- Mock servers
- ✓
- Automated / contract testing
- -
- Team collaboration & sharing
- -
- Doc generation
- -
- OpenAPI / spec import
- -
- CI integration / CLI
- ✓
Platform & deployment
Independently observed- macOS
- Linux
- Windows
- Cloud / SaaS
Integrations (1)
Independently observed- MCP•
Fiddler FAQ
Common questions about Fiddler, answered from independent, dated evidence.
What is Fiddler?
Fiddler is a debugging proxy that intercepts HTTP and HTTPS traffic between applications and servers, enabling developers to inspect, modify, and analyze network communication for troubleshooting purposes. Available as a modern cross-platform subscription service or legacy free Windows tool. It is indexed under API Development Tools.
Source: https://www.telerik.com/fiddler
Is Fiddler free?
Fiddler offers a free tier, so you can start without paying. Paid plans start at $7 per month. Prices are published openly on the vendor's own pricing page. Pricing changes often, so verify at source before relying on it.
Source: https://www.telerik.com/fiddler
What platforms does Fiddler support?
Fiddler supports Windows, macOS and Linux. Platforms we have not confirmed are simply not listed here rather than ruled out.
Source: https://www.telerik.com/fiddler
Can Fiddler be self-hosted?
We have only confirmed a cloud / SaaS deployment for Fiddler, so it appears to be vendor-hosted. If a self-hosted option exists we have not found it documented publicly.
Source: https://www.telerik.com/fiddler
What security certifications does Fiddler have?
We have independently confirmed SOC 2 for Fiddler. Certifications we do not list are ones we have not been able to verify from public sources, which is not the same as Fiddler not holding them. Always confirm compliance directly before you rely on it.
Source: https://www.telerik.com/fiddler
Where is Fiddler available?
Fiddler is available worldwide. Its primary market is the United States.
Source: https://www.telerik.com/fiddler
Fiddler alternatives
Other api development tools we track, ranked by the same independent score.
- ApidogAn integrated platform for designing, testing, and documenting APIs with built-in AI assistance and real-time team collaborationmedium · 73%
- RedoclyTools for creating, validating, and managing API specifications and documentation across teamshigh · 76%
- Swagger UIInteractive API documentation generator from OpenAPI specificationshigh · 76%
- InsomniaCross-platform API client supporting multiple protocolshigh · 75%
- PostmanAn AI-powered API platform for developing, testing, and managing APIs at enterprise scalemedium · 73%
- curlTransfer data across the internet using a command-line tool or librarymedium · 51%
Compare Fiddler
Side by side against other api development tools, attribute by attribute, with a source on every value.
The vioscaleAI 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.
| Signal | Score | Weight | Contribution | Evidence |
|---|---|---|---|---|
| Pricing transparency | 100 | 0.05 | 5.3 | ✓ |
| Security posture | 45 | 0.09 | 3.9 | ✓ |
| Price level | 80 | 0.04 | 3.2 | ✓ |
| Reliability | 50 | 0.05 | 2.7 | ✓ |
| Capabilities | 58 | 0.03 | 1.8 | ✓ |
| Integrations | 9 | 0.04 | 0.3 | ✓ |
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.
Content
| Attribute | Value | Evidence |
|---|---|---|
| Faq | 6 items | mediumsource · 2026-09-10 · 58% |
Features
| Attribute | Value | Evidence |
|---|---|---|
| Capabilities | Mock server, Rest client, Ci integration | mediumsource · 2026-09-03 · 60% |
Integrations
| Attribute | Value | Evidence |
|---|---|---|
| Count | 1 | mediumsource · 2026-09-18 · 60% |
Market
| Attribute | Value | Evidence |
|---|---|---|
| Availability | PrimaryMarkets: … · AvailabilityScope: global · AvailableCountries: … · NotAvailableCountries: … | mediumsource · 2026-09-03 · 50% |
Pricing
Reliability
| Attribute | Value | Evidence |
|---|---|---|
| Status page | Yes | mediumsource · 2026-08-03 · 60% |
Security
Is Fiddler the right choice for you?
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