Freedom251 › Webhook Management Software
Hook0
What Hook0 is
Hook0 is an open-source Webhooks-as-a-Service platform that manages webhook delivery, retries, and security through an API call. Configurable two-phase retries handle failed deliveries, and events that exhaust their retry budget can go to a dead letter queue. Payloads are signed with HMAC-SHA256 and timestamps to help subscribers detect replay attacks. Delivery logs show requests, responses, status codes, and latency; events can be replayed from the dashboard or API. A subscriber portal lets customers manage endpoint URLs, secrets, and event filters. Developers can use the REST API, Python and Node.js SDKs, or an MCP server for AI assistants. Hook0 says it connects with more than 3,000 apps through Zapier and also lists Integromat. Its cloud service is hosted in France and keeps customer data in Europe. The free Developer plan allows 100 events per day, with excess events blocked. Paid cloud plans start at €59/mo excl. VAT and bill excess events; a free self-hosted option is also listed.
Who it suits
Hook0 suits developers who need to send webhook events with retries, delivery logs, signing, and replay. It may also fit teams seeking a self-hosted option or integrations through Zapier.
What it does well
- Supports two-phase retries and a dead letter queue.
- Logs delivery details and allows event replay.
- Provides Python and Node.js SDKs.
- Cloud hosting is in France, with data kept in Europe.
What to know first
- Free Developer plan blocks events beyond 100 per day.
- Developer plan retains data for seven days.
- Paid Startup support has a three-day response time.
Limits
The free Developer plan is limited to 1 developer, 1 application, 10 event types, 10 subscriptions, and 100 events per day; excess events are blocked, and data is retained for 7 days. The free self-hosted plan does not include infrastructure scaling, 99.9% uptime, or managed updates. The Startup plan includes 30,000 events per day, then charges €0.003 per event; Pro includes 100,000 events per day, then charges €0.0001 per event.
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Developer | FREE Forever · 1 developer · 1 application · 10 event types · 10 subscriptions · 100 events/day · Extra events blocked · 7 days data retention · Community support | Free |
| Self-hosted | FREE Forever · Host your own instance · SSPL-1.0 · Community support · Infrastructure scaling, 99.9% uptime, and managed updates not included | Free |
| Pro | €190 /mo excl. VAT; €1,824/yr excl. VAT (20% off) · Unlimited developers, applications, event types, and subscriptions · 100,000 events/day · Then €0.0001/event · 30 days data retention · Priority email support (3-day response) · Static source IPs on demand | €190 a month |
| Startup | €59 /mo excl. VAT · 25 developers · 1 application · 50 event types · 300 subscriptions · 30,000 events/day · Then €0.003/event · 14 days data retention · Email support (3-day response) | €59 a month |
| Enterprise | Custom /year · Unlimited everything · Custom events per day · Custom data retention · Custom SLA and dedicated support · Enterprise security and compliance · Static source IPs on demand | On request |
As hook0.com lists them, read 2 Oct 2026. The maker's own page has the final word.
Getting started
- Open https://www.hook0.com/.
- Choose the free Developer plan, a paid Cloud plan, or the free self-hosted plan.
- For a self-hosted instance, provide and manage your own hosting infrastructure.
- Use the REST API or a Python or Node.js SDK to connect your application.
- Configure subscriber endpoints, secrets, and event filters in the subscriber portal.
Verdict
Hook0 offers webhook delivery controls and developer tooling, with both cloud and self-hosted options. Consider the free plan’s event cap and retention period before selecting a plan.
Questions
Is Hook0 free?
Yes. The Developer plan is free, billed FREE Forever. A free self-hosted plan is also listed.
What do paid plans cost?
Startup is €59/mo excl. VAT, and Pro is €190/mo excl. VAT or €1,824/yr excl. VAT (20% off). Enterprise is billed Custom /year; no price is listed.
What platforms does Hook0 support?
The listed platform is web. Hook0 also offers a self-hosted deployment option.
Is Hook0 open source?
Yes. Hook0 is described as open source, and its self-hosted plan lists the SSPL-1.0 license.
Which integrations and developer tools are available?
Hook0 provides a REST API, Python and Node.js SDKs, and an MCP server. It says it connects with more than 3,000 apps through Zapier and also describes Integromat as an integration option.
Where is Hook0 based and hosted?
Hook0 describes itself as an independent European company headquartered in Chantonnay, France. Its cloud service is hosted in France, and customer data is kept in Europe.
Facts from Hook0's own pages
- API and SDKs
- Hook0 provides a REST API and SDKs for Python and Node.js, plus an MCP server for AI assistants. · hook0.com, 2 Oct 2026
- Company
- Hook0 describes itself as an independent European company that is bootstrapped and has no venture capital funding. · hook0.com, 2 Oct 2026
- Compliance
- Hook0 says its cloud infrastructure is hosted by Clever Cloud in France and cites the provider's SOC 2 and ISO 27001 audits. · hook0.com, 2 Oct 2026
- Delivery
- Hook0 supports configurable two-phase retries and a dead letter queue when deliveries exhaust their retry budget. · hook0.com, 2 Oct 2026
- Headquarters
- Chantonnay, France · hook0.com, 28 Sept 2026
- Hosting
- Hook0 says its cloud service is hosted in France and keeps customer data in Europe. · hook0.com, 2 Oct 2026
- Integrations
- Hook0 says it connects with more than 3,000 apps through Zapier and describes Integromat as another integration option. · hook0.com, 2 Oct 2026
- Monitoring
- Delivery logs include request, response, status code, and latency, and events can be replayed from the dashboard or API. · hook0.com, 2 Oct 2026
- Notable limit
- The free Developer plan blocks events over its 100-events-per-day limit, whereas paid Cloud plans bill excess events per event without blocking them. · hook0.com, 2 Oct 2026
- Product
- Hook0 is an open-source Webhooks-as-a-Service platform that handles webhook delivery, retries, and security from an API call. · hook0.com, 2 Oct 2026
- Security
- The security page says Hook0 uses a signed DPA, discloses subprocessors, encrypts hourly backups, and restricts production access behind a two-factor VPN. · hook0.com, 2 Oct 2026
- Signing
- Hook0 signs payloads with HMAC-SHA256 and includes timestamps to help subscribers detect replay attacks. · hook0.com, 2 Oct 2026
- Subscriber portal
- The subscriber portal lets customers manage their endpoint URLs, secrets, and event filters. · hook0.com, 2 Oct 2026
- Support
- The free Developer plan includes community support, while paid plans list email or priority email support with a three-day response time. · hook0.com, 2 Oct 2026
- Use cases
- Hook0 describes use cases including SaaS customer notifications, e-commerce, IoT, data synchronization, and internal service communication. · hook0.com, 2 Oct 2026
Where Hook0 stands on Freedom251
- Webhook Management Software#13 of 29