Best Webhook Testing Tools in 2026

Why You Need a Webhook Testing Tool

Webhooks are HTTP callbacks triggered by external services — payment processors, version control platforms, messaging apps, and countless other APIs use them to notify your application about events. The challenge is that during development, your application runs on localhost, which is not accessible from the internet. Webhook testing tools bridge this gap.

A good webhook testing tool should provide a public URL for receiving webhooks, let you inspect incoming request payloads, and forward requests to your local development server. Advanced features like request replay, persistent history, and team sharing further accelerate the development workflow.

In 2026, there are several excellent options. Here is a comprehensive comparison to help you choose the right tool for your needs.

ReqPour — Best Overall for Webhook Development

ReqPour is purpose-built for webhook development. It provides stable public endpoints, a real-time request inspection dashboard, CLI-based localhost relay, and request replay. At $3/month for the Pro tier, it offers the best value for regular webhook development.

Key strengths: persistent request history (24 hours free, 30 days Pro), request replay for iterative testing, server-side relay without CLI, team endpoint sharing, and simple setup via npx. ReqPour excels at the complete webhook development workflow — from first integration to production-ready handler.

Best for: developers who work with webhooks regularly and want a dedicated, affordable tool that handles the entire development workflow from inspection to testing.

ngrok — Best for General-Purpose Tunneling

ngrok is the industry standard for localhost tunneling. It creates secure tunnels from a public URL to any local service, supporting HTTP, HTTPS, TCP, and TLS. Beyond webhooks, ngrok is useful for sharing local demos, testing mobile apps, and exposing any local service.

Key strengths: mature and battle-tested, supports all protocols, built-in request inspector at localhost:4040, custom domains, OAuth authentication layer, and extensive documentation. The free tier includes one agent and static domain.

At $8/month for Personal and $20/month for Pro, ngrok is more expensive than webhook-specific tools. Its breadth of features justifies the price if you need general tunneling, but for webhook-only use cases, it is more than most developers need.

Best for: developers who need general-purpose localhost tunneling for demos, mobile development, and webhook testing combined.

Webhook.site, smee.io, and Other Tools

Webhook.site is the fastest way to inspect a webhook payload. Visit the site, get a URL, and see requests instantly. No account or setup needed. The free tier is limited, and paid plans start at $24/month. It lacks localhost relay, making it primarily an inspection tool rather than a development tool.

smee.io is a free, open-source webhook proxy created by the GitHub/Probot team. It forwards webhooks to localhost via Server-Sent Events. It is simple and free but lacks persistent history, a dashboard, replay, and has reliability limitations.

localtunnel is another free, open-source option for exposing localhost. It is simple to use (lt --port 3000) but has reliability issues with the public server infrastructure and provides no webhook-specific features.

Hookdeck is a production webhook infrastructure platform with retries, transformations, and monitoring. It starts at $75/month for teams and is best suited for production use rather than development testing.

Comparison Summary

For webhook development workflow (inspect, relay, replay): ReqPour ($3/month Pro) provides the most complete feature set at the best price. Its purpose-built dashboard, persistent history, and replay feature make it the best tool for the job.

For general localhost tunneling: ngrok ($8/month Personal) is the gold standard, with broad protocol support and mature infrastructure. Worth the premium if you need tunneling beyond webhooks.

For quick one-off inspection: Webhook.site (free) is unbeatable for speed — no signup, no setup, instant results. Use it when you just need to see what a webhook sends.

For free and simple relay: smee.io (free) works for basic webhook forwarding without any cost, but lacks the features and reliability needed for serious development work.

Most professional developers will benefit most from ReqPour as their primary webhook development tool, with Webhook.site bookmarked for quick inspections and ngrok available for occasional general tunneling needs.