TernaryWire

TernaryWire is a native alternative to Postman: one small binary, no Electron, no Node.js, no account. It draws its first frame in about 40 ms, uses under 90 MB of memory and streams a 100 MB response to disk instead of into memory. Collections are plain JSON files in a folder you can commit to Git.

• HTTP, GraphQL, gRPC, WebSocket, Socket.IO, MQTT, SOAP, MCP and AI requests in one app, each with its own tab, message log and scripts.
• Postman compatible: collections, environments and pm.* scripts import and run unchanged for common use; a corpus of 50 realistic Postman scripts passes 50 out of 50.
• Collection Runner and CLI with data files, JUnit/HTML/JSON reports and newman-compatible options, so it can replace newman in CI. Performance tests with virtual users.
• Flows: a visual canvas that chains requests, conditions, loops, parallel branches, scripts and AI calls.
• Spec Hub for OpenAPI, AsyncAPI, Protobuf, GraphQL and Smithy files, with live validation and a live docs preview.
• A local mock server, webhook listener and capture proxy, and twelve auth types from Basic and OAuth 2.0 to AWS SigV4.
• Runs on macOS, Windows and Linux, in English and Indonesian, with light and dark themes.