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Insomnia

Clean, fast API client with strong GraphQL and gRPC support.

API TestingFree tierOpen sourceSelf-hostable
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What it is

Insomnia is a streamlined REST, GraphQL, gRPC and WebSocket client with environment management, a plugin system and the Inso CLI for running suites in CI. Kong maintains it. A local-vault mode addresses the offline and privacy concerns that pushed some teams away from cloud-first clients.

Best for

Developers who mainly want a fast client with excellent GraphQL support.

Where it is strong

  • Noticeably faster and lighter than Postman for everyday request work.
  • Best-in-class GraphQL and gRPC ergonomics.
  • Design-first OpenAPI workflow with linting built in.

Where it falls short

  • A forced-account change in 2023 damaged trust; check the current model before standardising on it.
  • Test scripting is less capable than Postman's.
  • Smaller ecosystem of shared collections.

Pricing

From $12 per user/month (Pro; ~17% off billed annually)

Free tier

Free tier: Essentials is free for up to 3 users, including local and cloud projects, CLI and 1,000 mock requests a month.

What drives the bill: Free for small teams; Pro lifts the user cap and adds RBAC, and Enterprise at $45 per user/month adds SSO/SCIM and Kong Konnect integration.

Check current pricing on Kong’s site

Figures are indicative and were last reviewed August 2026. Vendors change pricing often; confirm before you commit.

Works with

KongOpenAPIGraphQLgRPCGitHub Actions

What people who use Insomnia say

No reviews of Insomnia yet. If you have used it in anger, yours would be the first.

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