Insomnia vs Postman

From $12 per user/month (indicative)

From $14 per user/month (Basic, billed annually)

Free for solo use; paid tiers add collaboration, cloud sync and enterprise controls.

Free tier is generous for individuals. Costs come from collaborator seats and monitoring/mock-call volume, and enterprise plans jump sharply.

Free plan for individuals with local storage.

Free plan for individuals and small teams with limited collection runs, mock calls and monitors.

Widely used

Kong · since 2016

Category standard

Postman, Inc. · since 2012

• 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.

• Near-universal adoption — collections are a lingua franca between teams and vendors.
• Covers design, mocking, testing, documentation and monitoring in one place.
• Newman makes any collection runnable in CI without rewriting it.

• 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.

• Cloud-first sync raised real concerns for teams handling sensitive API credentials; the offline story has been repeatedly reduced.
• Collections stored in the vendor cloud rather than your repo make code review and branching awkward.
• The desktop app has grown heavy, and per-seat costs add up on large teams.

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

Teams that want one tool covering the whole API lifecycle and value ecosystem ubiquity.