Hook0 vs RelayKit
Hook0
hook0.comRelayKit
relaykit.ioSide by side
| Figure | Hook0 | RelayKit |
|---|---|---|
| Price from | €59/mo | $9/mo |
| Free plan | Yes | Yes |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| API | — | Yes |
| Plans published | 5 | 3 |
| Spec score · Webhook Management Software | 8.3 (#12) | 7.8 (#20) |
| Integrations | Hook0 says it connects with more than 3,000 apps through Zapier and describes Integromat as another integration option. | Inbound signature verification supports Stripe, GitHub, Shopify, Twilio, SendGrid, Paddle, Clerk, and Resend. |
| Security | The security page says Hook0 uses a signed DPA, discloses subprocessors, encrypts hourly backups, and restricts production access behind a two-factor VPN. | The service offers inbound signature verification, IPv4 and IPv6 IP allowlisting, configurable rate limits, and audit records for rejected requests. |
| Support | The free Developer plan includes community support, while paid plans list email or priority email support with a three-day response time. | The Team plan includes priority support. |
Plans
Hook0
- DeveloperFree
- Self-hostedFree
- Startup€59 a month
- Pro€190 a month
- EnterprisePriced on request
In their own words
RelayKit
RelayKit is a cloud service and API for receiving, inspecting, verifying, storing, and forwarding webhook events from third-party services. One incoming event can be delivered to multiple destinations in parallel, with each destination tracked and retried independently. Failed deliveries receive automatic retries of up to 20 attempts, and users can replay events manually. Inbound signature verification supports Stripe, GitHub, Shopify, Twilio, SendGrid, Paddle, Clerk, and Resend. Security controls include IPv4 and IPv6 IP allowlisting, configurable rate limits, and audit records for rejected requests. RelayKit says it forwards the original request body and headers, except for specified hop-by-hop headers. The @relaykit/cli can send webhooks to a local development server and requires Node.js 18 or later. Hobby costs nothing for 1,000 webhooks monthly. Pro costs $9 a month for 100,000 webhooks, and Team costs $29 a month for 500,000. Team adds Schema Sentinel, Time Machine replay, and priority support.