Insomnia review
A flexible, open-source API client with broad protocol support and CLI automation.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Insomnia is an open-source API collaboration platform for developers and teams building, testing, debugging, and designing APIs. It supports REST, GraphQL, gRPC, WebSocket, SOAP, and SSE workflows, making it suited to teams working across multiple API styles. Its core toolkit includes request collections, collection runs, scripting, environments, OpenAPI design, mocking, API testing, code generation, and CLI automation. Windows, macOS, and Linux support make it a practical desktop client for varied development environments.
The published plans show a useful freemium structure. Essentials costs $0 per user per month and includes Git Sync projects for up to 3 users, unlimited Cloud/Local projects, Inso CLI for CI/CD automation, unlimited collection runs, unlimited environments, and 1,000 mock server requests per month. Pro costs $12 per user per month when billed monthly, adding unlimited users, Git Sync projects for all users, unlimited organizations, role-based access control, and 10,000 mock server requests per month. Enterprise costs $45 per user per month and adds Kong Konnect integration, SAML/OIDC SSO, SCIM, storage controls, domain capture and invite control, vault integrations, and unlimited mock server requests.
Insomnia stands out when one client needs to cover API design, request execution, debugging, mocking, and automated testing across several protocols. Projects can stay local, use Git repositories, or use Insomnia Cloud, while Git and Kong Konnect provide defined ecosystem connections. The Inso CLI supports CI/CD automation, and API mocking can draw from collections, responses, OpenAPI specifications, or natural language. Developers who want a broad, flexible API client should consider Insomnia; teams that require scheduled recurring runs or dedicated contract-testing support should evaluate those requirements separately before choosing it.
Insomnia pros and cons
- Where it wins
- Supports REST, GraphQL, gRPC, WebSocket, SOAP, and SSE
- Combines scripting, environments, mocking, testing, and OpenAPI tools
- Offers local, Git, and cloud storage with Inso CLI automation
- Where it doesn't
- Essentials Git Sync projects support up to 3 users
- Role-based access control and SSO/SCIM are Enterprise features
- Pro costs $12 per user per month when billed monthly
Insomnia fact sheet, pricing and score →
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