HttpMaster
Hoppscotch
API Fortress
Postman
Assertible
Request inspector
SoapSonar
CurlHub.io
Hooksbase
Hookdeck
Svix
Convoy
Zapier
Make.com
Pipedream
Core HttpMaster features are: * HttpMaster project to store complete definition of API calls in one single place. * Broad set of http properties. * Dynamic parameters to simulate variations of input data or create global API values. * Response data validation with logical expressions. * Request chaining to use data from previous request with the next request. * Extensive data upload support, including 'multipart/form-data'. * Request data builder for creating request body with an optional dynamic parameters. * Request item execution with detailed progress monitoring. * Execution groups to create batches of requests. * Comprehensive execution data review and management. * Additional tools (basic request tool for ad-hoc execution, command line interface, OpenAPI import, etc).
Hooksbase is an alternative to Hookdeck and Svix, built for teams whose consumer is an AI agent. Where most webhook tools are HTTP-to-HTTP, Hooksbase adds email, form, and scheduled-cron ingest, plus typed outbound delivery to AWS SQS, AWS EventBridge, GCP Pub/Sub, and S3 alongside HTTP. Every delivery gets retries, strict FIFO ordering, a dead-letter queue, and deterministic replay from persisted snapshots. Five verified provider packs (Stripe, GitHub, Clerk, Slack, Resend) validate signatures on the way in; outbound signing is Standard Webhooks-compatible. It runs entirely on Cloudflare's edge and is hosted-only, with flat, predictable tiers โ Free (5,000 deliveries/month, no card), Starter $25, Pro $79, Business $249 โ instead of per-event metering.
HttpMaster HooksbaseHttpMaster is well-suited for developers, QA engineers, and testers who need to perform end-to-end testing of web APIs. It's particularly beneficial for those who require a versatile testing solution with both automated and manual testing features. It's also ideal for teams that need to validate the functionality, performance, and security of their web apps through an intuitive platform.
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HttpMaster's answer
Developers and testers.
Hooksbase's answer:
Developers building AI agents and automations that consume external events, and small teams that want reliable webhook ingest, routing, and delivery without running their own retry and replay infrastructure. Typical users receive events from providers like Stripe, GitHub, Clerk, Slack, or Resend and need them delivered โ in order, with recovery โ to an agent, an HTTP endpoint, or a cloud queue.
HttpMaster's answer
HttpMaster's answer
Performance, simple UI, resource friendly.
Hooksbase's answer:
Choose Hooksbase if your event consumer is an AI agent or you need more than HTTP-to-HTTP. Compared to Hookdeck and Svix, it adds email, form, and scheduled-cron ingest plus typed delivery to AWS SQS, EventBridge, GCP Pub/Sub, and S3 โ with retries, strict FIFO ordering, a dead-letter queue, and deterministic replay from persisted snapshots on every delivery. Signature verification is built in for Stripe, GitHub, Clerk, Slack, and Resend, and outbound signing is Standard Webhooks-compatible. Tiers are flat and predictable โ Free (5,000 deliveries/month, no card), then $25/$79/$249 โ instead of per-event metering.
HttpMaster's answer
Microsoft .NET.
Hooksbase's answer:
Hooksbase runs entirely on Cloudflare: Workers for compute, D1 for state, R2 for payload storage, Durable Objects for delivery ordering and rate limiting, and Queues for fan-out. The API is built with Hono in TypeScript, and it ships a first-party TypeScript SDK and CLI.
Hooksbase's answer:
Most webhook tools are HTTP-in, HTTP-out. Hooksbase ingests events over four channels โ HTTP webhooks, email, hosted forms, and scheduled cron โ and delivers to typed destinations beyond HTTP: AWS SQS, AWS EventBridge, GCP Pub/Sub, and S3-compatible storage. Every delivery is persisted with deterministic replay, so a consumer that was down โ often an AI agent โ can recover exactly the events it missed. It runs entirely on Cloudflare's edge and pricing is flat per tier rather than metered per event.
Hooksbase's answer:
Hooksbase came out of rebuilding the same webhook plumbing โ ingest, verify, retry, replay โ for every agent project. Instead of rebuilding it again, we made it a hosted service on Cloudflare's edge, with the multi-channel ingest and deterministic replay agents actually need.
Hoppscotch - Open source API development ecosystem
Hookdeck - Hookdeck makes it simple to build and deploy reliable, testable, and debuggable applications that rely on webhooks.
API Fortress - API performance, accuracy, and uptime testing. Without code.
Svix - The enterprise ready webhooks service, open-source and in the cloud.
Postman - The Collaboration Platform for API Development
Convoy - Local and regional trucking on demand
