Test any API.
Ship faster.
The lightweight, browser-based API playground for developers. Build requests, inspect responses, and collaborate — no install needed.
Free foreverNo credit cardNo install
Works with every API you already use
Features
Everything you need to test APIs
A complete toolkit for building, testing, and debugging REST APIs — all from your browser.
Send Requests
Full REST support — GET, POST, PUT, PATCH, DELETE with custom headers, body, and auth.
Save & Organize
Create workspaces and collections to keep your API requests structured and accessible.
Inspect Responses
Syntax-highlighted JSON, headers, timing, and cookies — all formatted beautifully.
Export Logs
Export as cURL, Fetch, Axios, or Python requests. Share with your team in one click.
Team Collaboration
Share collections with your team. Everyone stays in sync with real-time updates.
No Install Required
100% browser-based. Open a tab and start testing — works on any device, any OS.
How it works
Three steps to test any API
No setup, no installation. Go from zero to testing in under a minute.
Enter your endpoint
Paste any REST API URL and select your HTTP method — GET, POST, PUT, or DELETE.
Configure headers & body
Add custom headers, auth tokens, query parameters, and request body with syntax highlighting.
Fire & inspect
Hit Send and instantly see the formatted response, status code, timing, and headers.
Try it now
Your API playground — right here
Paste an endpoint and hit Send. No signup needed.
Compare
Why developers choose APIFlow
See how we stack up against the alternatives.
| Feature | APIFlow | Postman | Insomnia | cURL |
|---|---|---|---|---|
| Browser-based (No Install) | ||||
| REST API Support | ||||
| Syntax-highlighted Responses | ||||
| Save & Organize Requests | ||||
| Team Collaboration | ||||
| Export (cURL, Fetch, etc.) | ||||
| Free Tier | ||||
| Lightweight & Fast | ||||
| Environment Variables | ||||
| No Account Required |
Testimonials
Loved by developers
Join thousands of developers who have made APIFlow part of their daily workflow.
“APIFlow replaced Postman for my daily workflow. It loads instantly in the browser and the response viewer is beautifully formatted. I can't go back.”
Sarah Chen
Senior Frontend Engineer, Vercel
“The export to cURL and Fetch is a game changer. I build my requests in APIFlow and paste the code directly into my projects. Saves me hours every week.”
Marcus Rodriguez
Backend Developer, Stripe
“Our QA team switched from Insomnia to APIFlow. The shared collections and zero-install approach means everyone on the team is using the same tool instantly.”
Aisha Patel
QA Engineer, Shopify
“As a solo developer, I needed something lightweight. APIFlow is exactly that — no bloat, no Electron overhead, just a fast API testing tool in my browser.”
James Kim
Indie Developer, Self-employed
Ready to ship faster?
Start testing APIs in seconds. Upgrade to Pro when you need unlimited saves, team features, and extended history.