With Webhook.site, users instantly get a unique, random URL and e-mail address. Everything that's sent to these addresses are shown instantly so you can test and debug Webhooks and HTTP requests. Webhook.site also lets you create workflows using the Custom Actions UI, or scripting languages like WebhookScript and JavaScript, to transform, validate and process HTTP requests in a variety of ways – without setting up and maintaining your own infrastructure.
Webhook Relay is a simple tool that allows you to demo websites without deploying, directly from your laptop. It works through NAT environments (e.g. a home or office network) without having to configure port forwarding, or in cloud computing environments with ephemeral IP addresses. All users get unique public endpoints.