Loading SaaS profile...
Webhook Relay
Receive webhooks on localhost directly.
What it does
Forwards incoming webhooks to localhost without public IPs. Creates secure, bidirectional tunnels for internal APIs. Distributes a single webhook to multiple distinct destinations. Logs and inspects webhook payloads for easy debugging. Replays failed webhook requests automatically.
Why it works
Bypasses NAT/Firewalls: It allows developers to test webhooks on their local machines without messing with router configurations or exposing their home network. Fan-out Delivery: Can take one webhook from Stripe and securely fan it out to five different internal microservices simultaneously. Security First: Offers end-to-end encryption and token-based authentication so private networks stay entirely isolated. Uninterrupted Testing: The ability to replay payloads means developers don't have to constantly trigger live events in third-party apps just to test their code. Lightweight Client: Runs via a very simple, lightweight CLI agent that connects effortlessly in seconds.
Category: Utilities & System Tools
Team Size: 1
Visit Website
As of 2026
Utilities & System Tools
Receive webhooks on localhost directly.
Overview
Webhook Relay is a developer tool that creates secure tunnels to route webhooks directly to local development environments or private networks. It eliminates the need to configure complex routers or public IPs, allowing developers to test API integrations from Stripe, GitHub, or Docker seamlessly.
Funding status: Bootstrapped
Pricing: Freemium
Tech stack: Go, Kubernetes
Platform: Web • CLI • Docker
Integrations: Stripe, GitHub, Docker, Slack, Jenkins
Founder story
As a DevOps engineer, Karolis Rusenas frequently needed to receive webhooks from GitHub and DockerHub on his local machine and internal private networks. Frustrated by the constant hassle of configuring firewalls, dynamic IPs, and complex routers, he decided to build a simple, secure tunnel specifically for webhooks. He launched Webhook Relay as a solo, bootstrapped side project, growing it steadily into a highly profitable SaaS generating six figures.
What it does
- Forwards incoming webhooks to localhost without public IPs
- Creates secure, bidirectional tunnels for internal APIs
- Distributes a single webhook to multiple distinct destinations
- Logs and inspects webhook payloads for easy debugging
- Replays failed webhook requests automatically.
Who it's for
- Backend developers
- DevOps engineers
- Integration specialists
- System administrators.
Why it works
- Bypasses NAT/Firewalls: It allows developers to test webhooks on their local machines without messing with router configurations or exposing their home network
- Fan-out Delivery: Can take one webhook from Stripe and securely fan it out to five different internal microservices simultaneously
- Security First: Offers end-to-end encryption and token-based authentication so private networks stay entirely isolated
- Uninterrupted Testing: The ability to replay payloads means developers don't have to constantly trigger live events in third-party apps just to test their code
- Lightweight Client: Runs via a very simple, lightweight CLI agent that connects effortlessly in seconds.
Growth strategies
- Built entirely as a solo founder project and shared transparently on Indie Hackers to capture early technical users.
- Provided a highly functional free tier for developers doing local testing, which served as a massive top- of-funnel engine.
- Focused heavily on documentation and SEO for highly specific developer queries like how to receive Stripe webhooks locally.
- Supported Docker environments natively, catching the massive wave of containerized development.
Alternatives
Comparison overview
- Ngrok: The most famous general-purpose tunneling tool for exposing local servers to the internet.
- Localtunnel: A free, open-source alternative to Ngrok that exposes local ports, but lacks advanced payload management.
- Hookdeck: A complete webhook infrastructure platform focused on queuing, routing, and error handling for production environments.
- Svix: An enterprise-grade webhook sending service that helps SaaS companies dispatch webhooks to their customers securely.
- While Ngrok is great for exposing entire local web servers to the public internet, Webhook Relay is laser-focused specifically on the webhook payload itself. It provides much better tools for fanning out a single webhook to multiple destinations and replaying requests, making it the superior choice for API integration testing without exposing your entire local environment.