Show HN:APIFlow Studio – Open-source, offline-first Postman alternative

Category: devtools

Tags: api-client, mock-server, offline-first, webhook-testing, openapi

Score: 6.3/10 (Innovation: 5, Technical: 6, Documentation: 8, Utility: 6)

APIFlow Studio is an open-source, offline-first API client and mock simulator that runs entirely in the browser using IndexedDB for storage. It offers live request proxying, synthetic mock generation with JSON Schema and Faker, and signed webhook testing, positioning itself as a privacy-conscious, account-free alternative to Postman.

Target audience: backend developers, frontend developers, API developers, QA engineers

Repository: https://apiflowstudio.onrender.com/ · TypeScript · MIT · 1 stars

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