ngrok Alternative
A Free ngrok Alternative Built Into an API Client
ngrok is excellent infrastructure — and for API development it’s often more than you need. SchemaClient gives you the part developers actually use daily: a public HTTPS URL to your localhost, with every request inspectable, replayable into a collection, and validated against your API’s schema. No CLI, no separate inspector tab, no bandwidth anxiety.
| Feature | SchemaClient Tunnel | ngrok |
|---|---|---|
| Price for everyday HTTP tunneling | Free — no bandwidth billing | Free tier with limits; paid plans for more |
| Public HTTPS URL | Yes — stable your-id.schemaclient.com subdomain | Yes — random URL; one static domain on free tier |
| Request inspection | Built into the app — live list, headers, bodies, timing | Local web inspector (127.0.0.1:4040) |
| Promote captured request to a saved collection | Yes — one click, then edit & resend | Replay only — no collection concept |
| Schema validation of tunneled traffic | Yes — flag contract drift on live webhooks | No |
| WebSocket pass-through | Yes | Yes |
| Raw TCP / TLS tunnels | No — HTTP(S) only | Yes |
| Custom domains | No | Yes (paid) |
| Edge auth / OAuth / IP policies | No | Yes (mostly paid) |
| Practical limits | 5 MB bodies, ~40 s per request | Plan-dependent bandwidth/connection limits |
Comparison reflects publicly available information as of July 2026. ngrok is a trademark of ngrok, Inc.
Webhook Testing
Point Stripe, GitHub, or any webhook provider at your tunnel URL. Watch deliveries arrive live, inspect the exact payload, and validate it against a schema so payload changes never surprise you in production.
Demos & Mobile Dev
Share a work-in-progress API with a teammate or point a mobile build at your dev machine — one stable HTTPS URL, no deploy, no firewall changes.
Debug From Real Traffic
Every captured request can become a saved, editable request in a collection. Reproduce a bug report by replaying the exact call that caused it.
Frequently Asked Questions
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