Insomnia

Collaborative API development platform for designing, debugging, and testing APIs

Open-source desktop application for API design, debugging, and testing. Supports HTTP/REST, GraphQL, gRPC, SOAP, WebSocket, Socket.IO, and SSE clients, OpenAPI spec editing, mock servers, automated collection testing, MCP client support, and Git/cloud/local storage sync. Includes Inso CLI for CI/CD automation and Kong Konnect integration on the Enterprise plan.

Category: Developer productivity
Pricing: freemium
Free tier: yes
API: no
MCP server: yes
SDK: no
Open source: yes

#api-client #api-testing #openapi #graphql #grpc #mcp #mock-servers #desktop-app

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Listed 2026-10-20 · last verified 2026-10-20 · extracted by @cf/zai-org/glm-5.3-flash · confidence 0.95

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