Testnizer Offline API Testing

Explore this developer service’s ongoing no-cost allowance, restrictions and official documentation before deploying.

INCLUDED FREE ALLOWANCEFree MIT-licensed offline desktop API testing client for HTTP/REST, SOAP, GraphQL, gRPC, WebSocket, SSE and MCP, with local SQLite collections and test suites; no vendor-enforced request, seat or time quota for the locally run software.

View official documentation

Plan details

What do these plan and deployment labels mean?

Plan: Ongoing free allowance
Deployment model: Local / embedded
Credit card: Not required
Commercial use: Allowed
Added to directory (UTC): 2026-11-05
Last checked: 2026-11-05

Important restrictions

Runs on the user's Windows, macOS or Linux computer; not a hosted API testing service. Network API providers, AI model APIs and external services may impose separate fees or quotas. Beta binaries may show OS signing warnings; verify downloads and do not assume production security certification.

View official documentation

Independent community listing, not affiliated with the provider. Always check the latest billing policy and quotas before enabling paid usage.