Axel vs HookBytes
Axel
axelapp.aiHookBytes
hookbytes.comSide by side
| Figure | Axel | HookBytes |
|---|---|---|
| Price from | $20/mo | $29/mo |
| Free plan | Yes | Yes |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 2 | 3 |
| Spec score · Webhook Management Software | 8.6 (#7) | 8.4 (#10) |
| Integrations | Listed destinations include Postgres, MongoDB, S3, Cloudflare R2, Databricks, BigQuery, and signed HTTP webhooks; generic webhook and custom HMAC sources are supported. | The Enterprise plan includes custom integrations. |
| Security | The security page says the edge requires TLS 1.2 or newer, raw R2 payload objects are encrypted at rest, source tokens are stored as SHA-256 hashes, and access is workspace-scoped. | The page describes HMAC authentication and says webhook payloads are stored safely. |
| Self-hosting | The docs say the public source release for self-hosting is being prepared; self-host operators manage their host, backups, and upgrades. | The open-source offering is a self-hosted Laravel webhook gateway with full source code access. |
Plans
In their own words
Axel
Axel captures third-party webhooks, routes them to data systems or HTTP services, and replays retained events. It stores an accepted event’s original payload before returning HTTP 202, then delivers it asynchronously. Declarative filters and field transformations can route one event to several destinations. Listed destinations include Postgres, MongoDB, S3, Cloudflare R2, Databricks, BigQuery, and signed HTTP webhooks; generic webhook and custom HMAC sources are also supported. The dashboard and CLI can replay retained events, while Axel Cloud provides 30 days of searchable event and delivery history. Data Contracts infer event and field types and check for schema changes every five minutes, but do not block delivery or guarantee destination acceptance. Delivery is at least once with a stable event ID across retries, so signed receivers should deduplicate. The Free plan includes 10,000 accepted inbound events monthly and community support. Pro costs $20 a month, with additional accepted events at 0.015 USD per 1,000; unused credit expires monthly. Axel is web, API, and self-hosted.
HookBytes
HookBytes provides webhook infrastructure as a managed cloud service or an open-source self-hosted gateway. It creates dynamic endpoints with HMAC authentication and custom routing rules, then delivers events asynchronously with exponential backoff and a dead letter queue for failed deliveries. Users can search, filter, inspect, and replay events through the dashboard or CLI. Stored payloads include event history and metadata such as headers and delivery status. The Open Source plan is a self-hosted Laravel gateway with full source access, an MIT license, community support, and unlimited webhooks at free. Cloud Starter costs $29 a month for up to 100K webhooks monthly, standard support, a 99.9% uptime SLA, email and Slack alerts, API rate limiting, and real-time monitoring. Enterprise has custom pricing, unlimited webhooks, a 99.99% uptime SLA, multi-region deployments, dedicated support, on-premise options, and custom integrations. HookBytes is available through API, self-hosted, and web platforms.