Insomnia
Open-source API client for REST, GraphQL and gRPC
FreeAPIOpen Source2 impressions
Insomnia is a free alternative to Postman.
Insomnia is an open-source API client for designing, testing, debugging and mocking REST, GraphQL, gRPC, SOAP and WebSocket APIs.
- for
- API developers, security-focused teams, and organizations needing collaborative API workflows.
- pricing
- freemium · free trial
- license
- Apache-2.0
- core@13.3.1-beta.113.3.1-beta.1 📦5 days ago
- core@13.3.013.3.0 📦10 days ago
- core@13.3.0-beta.113.3.0-beta.1 📦12 days ago
Key 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.
Use cases
- Design and iterate OpenAPI specs with live preview and linting.
- Mock APIs quickly for front-end development or integration testing.
- Run automated API test suites in CI pipelines using the Inso CLI.
- Synchronize API definitions across teams via Kong Konnect.
- Collaborate on API projects with role-based access and real-time updates.
Insomnia vs alternatives
 Insomnia |  Postman |  Bruno |  Firecamp | |
|---|---|---|---|---|
| Best for | Collaborative AI-native API testing | Comprehensive API platform | Offline-first API client | Open-source Postman alternative |
| Pricing | Freemium | Subscription | Free | Free |
| DevHunt upvotes | 0 | 0 | 0 | 48 |
| Launched | — | — | — | Jan 2023 |
- 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.
- Insomnia vs Bruno: Bruno is an offline-first, Git-friendly client with a simpler UI; Insomnia adds AI-native testing, enterprise security and Kong Konnect integration.
- Insomnia vs Firecamp: Firecamp is an open-source Postman alternative with similar protocol support but lacks the native Kong Konnect integration and enterprise RBAC features of Insomnia.
Insomnia FAQ
Is there a free version of Insomnia?+
Yes, Insomnia offers a free forever Scratch Pad and an open-source tier with unlimited projects and collection runs.
What protocols does Insomnia support?+
It supports HTTP/REST, GraphQL, gRPC, SOAP, WebSocket, Socket.io, SSE and more.
Can I store my API collections in Git?+
Yes, Insomnia provides native Git sync and a CLI for version-controlling collections.
Does Insomnia provide enterprise security features?+
Enterprise plans include SSO (OIDC/SAML), SCIM provisioning, RBAC, end-to-end encryption and SOC 2 compliance.
How does the Kong Konnect integration help?+
It lets you connect your API catalog directly to Insomnia, keeping endpoint definitions automatically in sync across design, testing and debugging.
Is there a trial for the enterprise features?+
A 14-day free trial is available with no credit card required.
Summarized by DevHunt from insomnia.rest · Oct 1, 2026. Details may change; check the official site.
About this listing
DevHunt lists Insomnia because developers expect to find it next to the tools in its category. It did not launch on DevHunt. Work on Insomnia? Message us to claim this listing.
-(1).png?auto=compress&fit=max&w=64)
