Insomnia

Insomnia is ranked #4 of 38 in API clients on Freedom251. It runs on Linux, macOS, Self-hosted, Windows. There is a free plan. A free trial is offered. Paid plans start at $12/mo.

Insomnia plans and pricing

All plans

Essentials Free billed monthly 3 users for Git Sync projects · 1,000 mock server requests per month insomnia.rest · 21 Sept 2026

Pro $12/mo Per user / month Unlimited users · Git Sync for all users · Unlimited organizations · RBAC · 10,000 mock server requests/month insomnia.rest · 30 Sept 2026

Enterprise $45/mo Per user* / month*; self-serve up to 50 users Kong Konnect integration · SSO (SAML/OIDC) and SCIM · storage controls · invite control · enterprise support · SOC2 access · AWS/GCP/HashiCorp/Azure vault integrations · unlimited mock requests · custom payment options insomnia.rest · 30 Sept 2026

Essentials Free Per user / month Unlimited Git Sync projects for up to 3 users · Unlimited Cloud/Local projects · Unlimited collection runs · Unlimited environments · 1,000 mock server requests/month · E2EE · custom linting · unlimited plugins insomnia.rest · 30 Sept 2026

Compared on API clients

Free plan: Yes
Paid from: $12/user/mo
GraphQL support: Yes

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Insomnia

What it does: Insomnia is an AI-native API collaboration platform for designing, testing, debugging, mocking, and governing APIs.
Protocols: The API client supports HTTP, REST, gRPC, GraphQL, WebSockets, SOAP, and SSE.
API design: Insomnia provides OpenAPI spec-first design, live previews, and generation of collections, tests, and mocks.
API mocking: It can generate API mocks from collections, OpenAPI specifications, API responses, or natural-language descriptions, locally or in the cloud.
API testing: The collection runner supports unlimited runs, pre-request and after-response JavaScript scripting, chained requests, and CI/CD execution through Inso CLI.
MCP client: Insomnia connects to HTTP and STDIO MCP servers, lets users invoke tools with custom parameters, and provides MCP authentication event logs.
Storage: API data can be stored entirely locally, in any Git repository, or in Insomnia Cloud with optional end-to-end encryption.
Collaboration: Teams can share projects, collections, mocks, and design specifications with organizations, RBAC, real-time collaboration indicators, and private organizations.
Enterprise identity: Enterprise supports OIDC or SAML single sign-on and SCIM automated user provisioning.
Vault integrations: Supported external vaults include HashiCorp Vault, Azure Key Vault, AWS Secrets Manager, and GCP Secret Manager.
Kong integration: Native Kong Konnect integration provides a synchronized API catalog and source of truth for endpoint discovery, design, testing, and debugging.
CI/CD integrations: Inso CLI can integrate API quality automation with GitHub, GitLab, Jenkins, Vercel, and other CI/CD pipelines.
Security and support: Enterprise includes access to SOC 2 certifications, worldwide support and professional services, enterprise agreements, and SLAs.
Desktop downloads: Official downloads are provided for macOS, Windows, NSIS, and other operating systems, including Linux through the other downloads.
Price from: $12/mo

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Where it ranks on Freedom251

Best API Clients in 2026#4 of 38
Best API Testing Tools in 2026#5 of 35

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Sources

insomnia.rest· checked 30 Sept 2026
insomnia.rest/features/api-debugging· checked 30 Sept 2026
insomnia.rest/features/api-design· checked 30 Sept 2026
insomnia.rest/features/api-mocking· checked 30 Sept 2026
insomnia.rest/features/api-testing· checked 30 Sept 2026
insomnia.rest/features/mcp-client· checked 30 Sept 2026
insomnia.rest/features/local-vault· checked 30 Sept 2026
insomnia.rest/features/collaboration· checked 30 Sept 2026
insomnia.rest/features/enterprise· checked 30 Sept 2026
insomnia.rest/features/konnect· checked 30 Sept 2026
insomnia.rest/features/insomnia-cli· checked 30 Sept 2026
insomnia.rest/download· checked 30 Sept 2026