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API_TESTER vs Insomnia

Open-source client supporting REST, GraphQL and gRPC, runs as a standalone app

Which to pick

Pick API_TESTER if you want…

  • Fast menu-bar API testing

Pick Insomnia if you want…

  • Collaborative AI-native API testing
  • Open-source multi-protocol API client
  • A free plan to start with
  • Open-source code (Kong/insomnia on GitHub, Apache-2.0 license)

Side by side

What it is
API_TESTER:API_TESTER is a lightweight macOS menu-bar tool for sending and validating HTTP requests.
Insomnia:Insomnia is an open-source API client for designing, testing, debugging and mocking REST, GraphQL, gRPC, SOAP and WebSocket APIs.
Best for
API_TESTER:Fast menu-bar API testing
Insomnia:Collaborative AI-native API testing
Who it’s for
API_TESTER:Mac developers who need quick API testing without leaving their workflow.
Insomnia:API developers, security-focused teams, and organizations needing collaborative API workflows.
Pricing
API_TESTER:Paid
Insomnia:Freemium
Open source
API_TESTER:—
Insomnia:Yes, 40,038 GitHub stars
Works with
API_TESTER:—
Insomnia:Kong Konnect, OIDC, SAML, SCIM, Inso CLI

API_TESTER features

  • HTTP methods. Send GET, POST, PUT, and DELETE requests instantly from the menu bar.
  • Custom headers & auth. Add custom headers and authentication to requests.
  • Body syntax checking. Edit and validate request bodies with built-in syntax checking.
  • Response view. See color-coded status, response time and formatted results.
  • Resizable UI. Resize the minimal interface while keeping it always accessible.
  • No data collection. The app does not collect any user data.

Insomnia features

  • Design-first API editor. Create and preview OpenAPI specs in real time with live linting.
  • Native API mocking. Generate dynamic mock responses from collections, specs or plain language.
  • Automated testing at scale. Run unlimited collection tests with pre/post scripts and CI/CD integration via Inso CLI.
  • Kong Konnect integration. Sync API catalog directly with Kong Konnect for up-to-date endpoint discovery.
  • Collaboration & RBAC. Real-time project sharing, role-based access controls and unlimited collaborators per project.
  • Flexible storage options. Store data locally, in Git, in the cloud, or hybrid with end-to-end encryption.
  • Enterprise identity & security. SSO via OIDC/SAML, SCIM provisioning, SOC 2 compliance and enterprise SLAs.
  • MCP client support. Test and debug MCP servers with AI-powered workflows.

API_TESTER vs Insomnia FAQ

Is API_TESTER or Insomnia free?+

API_TESTER is paid. Insomnia has a free plan and paid plans.

Is API_TESTER or Insomnia open source?+

Insomnia is open source (Kong/insomnia on GitHub, Apache-2.0 license). DevHunt has no public source repository on record for API_TESTER.

On DevHunt

API_TESTER

0 upvotes · Launched on DevHunt on Jan 6, 2026

Based on each tool's website and DevHunt data. Details may change; check the official sites.