Hook0
Webhooks-as-a-service (WaaS) that makes it easy for online products to provide webhooks. Dispatch up to 3,000 events/month with 7 days of history retention for free.
Hook0 provides a self‑hostable, open‑source platform for delivering webhooks. Developers register an application, define event types, and send events through a simple JSON REST API; the service handles delivery, retries, TLS encryption, and cryptographic signing of payloads. A built‑in dashboard lets users monitor delivery attempts, inspect payloads, and replay events via the UI or API.
The platform targets developers and product teams that need reliable, real‑time notifications without vendor lock‑in. It offers configurable retry schedules, mock payloads, and a subscriber portal to improve the webhook experience for end users. A free tier allows up to 3 000 events per month with seven days of history retention, and the solution can be run on‑premises or deployed as a SaaS offering.
Hook0 distinguishes itself by being fully open source under the SSPL‑1.0 license, providing production‑ready features such as signed and encrypted delivery, transparent logging, and an embeddable portal, while remaining free of subscription fees.
Reviews
Loading reviews…
Similar apps

API & Network Testing
Hookdeck Outpost
Open-source outbound webhooks for your platform

API & Network Testing
Svix
Open-source webhooks as a service that makes it super easy for API providers to send webhooks.
Network & Connectivity
DiffHook
Real-time alerts the instant pricing, policies, or pages change online. Monitor the web that drives your revenue, compliance, and ops.

API & Network Testing
Hoppscotch
An open-source, in-browser API client. The Postman alternative that loads instantly, requires no signup, and runs entirely on the page when…

Calendar & Scheduling
Gancio
Local community event and agenda sharing.

API & Network Testing
Novu
Notification infrastructure for developers.