Hi HN! Last year, I built LocalCan app in which you can develop apps using .local domains and Public URLs.<p>Although it allows for testing webhooks too, I wanted to give back and create a free online tool specifically for that purpose! And so, I've made Webhook.cool<p>Simply use your unique webhook URL to send any webhook to it from services like Shopify, Slack, Mailchimp, Trello, GitHub, PayPal, Discord, and Jira.<p>Give it a try and let me know how if you have any feedback.