Fiddler vs Insomnia
On the evidence we track, Insomnia leads this comparison with a composite score of 63/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.
Capabilities
Feature-by-feature on the axes that matter for api development tools. “-” means undocumented, not absent.
What each one is
The product in its own terms, so the numbers below have context.
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.
Insomnia
LeaderAn open-source application for designing, testing, and managing APIs across REST, GraphQL, gRPC, WebSockets and other HTTP protocols, with flexible local, cloud, and git-based storage options.
Pricing
List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.
Fiddler
From $7/month for Fiddler Everywhere. Free tier available. 10-day trial.
- Fiddler Everywhere$7/month
- Capture and modify HTTP/S traffic
- API composer for request editing
- Fiddler ClassicFree
- Manually inspect and debug Windows HTTP/S traffic
- Basic Composer support
Insomnia
LeaderFree tier with unlimited projects and Git Sync. Pro from $12/user/mo. Enterprise from $45/user/mo with contact sales for 50+ users.
- EssentialsFree
- Unlimited Git Sync projects for small teams
- Unlimited Cloud/Local projects
- Inso CLI access for CI/CD
- Unlimited collection runs
- Unlimited environments
- +4 more
- Pro$12/user/mo (15% savings annually)
- Everything in Essentials
- Unlimited users
- Git Sync for all users
- Unlimited organizations
- Role-based access control (RBAC)
- +1 more
- EnterpriseContact sales
- Everything in Pro
- Native Kong Konnect integration
- SSO (SAML/OIDC) and SCIM
- Mandate data storage location
- Domain capture and invite control
- +6 more
Platform & deployment
Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.
Integrations
What each product connects to. Counts come from the vendor's own integration directory where one exists.
Fiddler
- MCP
Insomnia
Leader- Kong Konnect
- GitHub
- Microsoft
- HashiCorp Vault
- Azure Key Vault
- AWS Secrets Manager
- GCP Secret Manager
- Spectral
Fiddler or Insomnia: which one depends on you
A composite score cannot know your constraints. Describe them and both get re-weighted against what you actually need, with the evidence behind every position.
Free to run, no account needed to start. How the evaluation works
Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.