
Svix
Hookdeck
Convoy
Webhook Relay
Webhook.site
ngrok
Webhook Catcher
Open-source webhook gateway: send and receive webhooks with every delivery on record, in the cloud or self-hosted. Free to start.

bundle.social
Zernio
Post and schedule on Instagram and X with one social media API. Instagram insights in the dashboard, MCP server for AI agents.

Which is more popular?
Website, pricing, platforms and company facts side by side.
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| Website | railhook.io | invisibleapi.ai |
| Pricing | ||
| Platforms | ||
| Company | Startup from Ukraine · 1 - 9 employees · 2025 | Startup from Portugal · 20 - 49 employees |
| Listed in |
In their own words, as submitted to SaaSHub.


Railhook is an open-source webhook gateway that handles webhooks in both directions. Sending. Your app makes one API call per event. Railhook delivers it to every subscribed endpoint, signs it with Standard Webhooks, retries on a schedule from one minute to a day, can keep per-endpoint order, and...
InvisibleAPI is a unified social publishing and insights API for developers and AI agents. Instead of maintaining separate integrations for every platform, you send one request. InvisibleAPI handles OAuth token lifecycles, media processing, rate limits, and retries. Built by EmbedSocial on 15+...
What each product offers, as listed by its team.


How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Railhook and InvisibleAPI.
InvisibleAPI's answer:
InvisibleAPI is built as developer infrastructure rather than a bloated social media management dashboard. Key differentiators include:
InvisibleAPI's answer:
Most social API wrappers merely forward requests and forward provider failures. When third-party platform APIs break or change without notice, downstream products break.
InvisibleAPI acts as true infrastructure. It absorbs platform-specific quirks, rate limits, token lifecycles, and delivery tracking behind a single, consistent API. You get:
InvisibleAPI's answer:
The primary audience is developers and engineering teams building social publishing features directly into their own applications.
InvisibleAPI is built specifically for:
Product teams: SaaS founders and engineering teams shipping in-app social publishing without building custom platform integrations.
AI agent developers: Builders using Claude, Cursor, or autonomous agent frameworks who need an MCP-native tool to publish and read social data.
Agencies: Teams managing multiple client social accounts across isolated multi-tenant organizations with role-based access.
InvisibleAPI's answer:
The team behind invisibleAPI has operated social media infrastructure in production for over 15 years. Over that time, product teams repeatedly asked the same question: "We love what your platform does, but we need the capability inside our own application."
Every team that tried building it internally hit the identical wall: juggling multiple platform OAuth flows, silent token expirations, sudden breaking changes, and conflicting rate limits.
We had already solved these operational problems in production. We created InvisibleAPI to expose that battle-tested plumbing as a clean, unified API so developers and AI agents never have to rebuild it from scratch.
Share your experience with using Railhook and InvisibleAPI. For example, how are they different and which one is better?
When comparing Railhook and InvisibleAPI, you can also consider the following products.

The enterprise ready webhooks service, open-source and in the cloud.
Compare Svix to Railhook or InvisibleAPI:

bundle.social is a unified social media API for publishing, scheduling, analytics, comments, and account management across major platforms. Connect unlimited social accounts with no per-account fees and scale based on usage.
Compare bundle.social to Railhook or InvisibleAPI:

Hookdeck makes it simple to build and deploy reliable, testable, and debuggable applications that rely on webhooks.
Compare Hookdeck to Railhook or InvisibleAPI:



Webhook Relay receives, transforms and delivers webhooks to any destination — a public URL, a private server, or your localhost. With durable retries your events survive outages, deploys and flaky endpoints, so nothing slips through.
Compare Webhook Relay to Railhook or InvisibleAPI: