Insomnia vs Postman

Postman offers a larger ecosystem of pre-built integrations and a paid enterprise tier, while Insomnia focuses on open-source core and native Kong Konnect sync.

InsomniaOpen-source API client for REST, GraphQL and gRPC

PostmanAPI platform for designing, testing and documenting APIs

Which to pick

Pick Insomnia if you want…

Collaborative AI-native API testing
Multi-protocol API client
Open-source code (Kong/insomnia on GitHub, Apache-2.0 license)
Integrations with Kong Konnect, OIDC or SAML (on Insomnia's list, not Postman's)

Pick Postman if you want…

Full-stack API lifecycle platform
Comprehensive API platform
Integrations with VS Code, Git or AWS (on Postman's list, not Insomnia's)

Insomnia: Open-source client supporting REST, GraphQL, gRPC

Side by side

What it is: Insomnia:Insomnia is an open-source API client for designing, testing, debugging and mocking REST, GraphQL, gRPC, SOAP and WebSocket APIs.; Postman:Postman is an API platform for designing, testing, documenting, and monitoring APIs.
Best for: Insomnia:Collaborative AI-native API testing; Postman:Full-stack API lifecycle platform
Who it’s for: Insomnia:API developers, security-focused teams, and organizations needing collaborative API workflows.; Postman:Developers and teams building, testing, and managing APIs.
Pricing: Insomnia:Freemium; Postman:Freemium
Plans: Insomnia:—; Postman:Free $0 · Solo $9 per month (billed annually) · Team $19 per user/month (billed annuall
Open source: Insomnia:Yes, 40,038 GitHub stars; Postman:—
Works with: Insomnia:Kong Konnect, OIDC, SAML, SCIM, Inso CLI; Postman:VS Code, Git, AWS, Postman CLI, Postman API

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.

Postman features

API design & discovery. Create, version, and explore APIs with the Context Graph and API discovery tools.
Automated testing. Generate collections, run automated tests, and perform performance testing with unlimited runners.
Mock servers. Spin up mock servers to simulate APIs before they exist.
API monitoring. Monitor live endpoints for uptime, drift, and performance metrics.
CI/CD integration. Run collection and governance checks on every commit via Postman CLI and integrations.

Insomnia vs Postman FAQ

Is Insomnia or Postman free?+

Insomnia has a free plan and paid plans. Postman has a free plan; paid plans start at $9/month (Solo).

Is Insomnia or Postman open source?+

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

Do Insomnia and Postman integrate with the same tools?+

Their integration lists don't overlap: Insomnia lists Kong Konnect, OIDC, SAML, SCIM and 1 more; Postman lists VS Code, Git, AWS, Postman CLI and 1 more.

On DevHunt

Insomnia

Listed by DevHunt

Insomnia on DevHunt →Insomnia alternatives

Postman