APIFlow Studio is an offline-first Postman alternative built for privacy and speed.
Key features:
• Zero login — 100% stored in browser IndexedDB
• Instant in-browser mock engine with Faker schemas
• Built-in CORS proxy for live API calls
• OpenAPI 3.1 & Postman v2.1 import/export
• Code export to cURL, Fetch, Axios & Python
• 1-click Docker Compose & MIT licensed
Mock and test API contracts before your backend is even ready.