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Dev tools · alternatives · 2026

24 alternatives to Knock data sources

Trigger event-based messaging from Stripe, Clerk, Supabase

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

  1. 1
    Knock▲342

    Notification infrastructure for developers

    2022 · knock.app · its alternatives →

  2. 2

    Build, manage, and ship customer messaging from Slack

    Jun 2026 · knock.app · its alternatives →

  3. 3

    Knock-Knock.net is a live honeypot dashboard showing real-time bot attacks by protocol, source country, ISP, username, password, and IP across SSH, Telnet, FTP, RDP, SMB, SIP, HTTP, and SMTP services.

    Feb 2026 · knock-knock.net · its alternatives →

  4. 4
    Knock▲168

    Knock-Knock.net is a live honeypot dashboard showing real-time bot attacks by protocol, source country, ISP, username, password, and IP across SSH, Telnet, FTP, RDP, SMB, SIP, HTTP, and SMTP services.

    Mar 2026 · tryknock.app · its alternatives →

  5. 5
    Knock CLI▲104

    Bring your notification infrastructure to your fingertips

    2023 · knock.app · its alternatives →

  6. 6

    Hey HN, I'm Chris, CTO of Knock (https://knock.app). We built email.info because every developer we talk to asks the same question: which email provider should I use? The existing resources are mostly vibes — "Best of" listicles, anonymous Reddit threads, or LLM answers trained on that same content. Objective performance data is always missing. Knock is a notification infrastructure platform, so we send billions of API requests to downstream email providers every year. We aggregated that data into a public dashboard covering 10 providers (SendGrid, Postmark, Resend, Mailgun, Amazon…

    Mar 2026 · knock.app · its alternatives →

  7. 7

    Low-code webhook initiation using your Postgres database

    2024 · quailrunner.com · its alternatives →

  8. 8

    Real World Data in Real-time API

    2018 · its alternatives →

  9. 9
    Notify▲791

    Get notified in Slack when your startup is mentioned online

    2015 · timer.now · its alternatives →

  10. 10KN

    Hey HN! I’m Chris – one of the co-founders at Knock (https://knock.app). Knock is notifications infrastructure for developers. We provide a set of flexible API primitives you can use to power complex notification systems, without having to roll your own notifications infrastructure in-house. In short: we built notifications so you don’t have to. We learned about scaling notifications systems the hard way. Previously, my co-founder and I worked together at Frame.io, where we saw the upside of product notifications as well as the pain involved in building and maintaining them. With…

    2022 · its alternatives →

  11. 11

    Private messaging app to stream or share files

    2021 · neogi.in · its alternatives →

  12. 12
    Chat4Data▲461

    Chat4Data is a Chrome extension that lets you scrape structured data from any website just by chatting with AI—no coding required. We're launching today on Product Hunt and would love your feedback!

    2025 · chat4data.ai · its alternatives →

  13. 13

    An interactive chatbot widget for your website

    2017 · collect.chat · its alternatives →

  14. 14
    Jitsu▲221

    Open-source event collection and data integration.

    2020 · jitsu.com · its alternatives →

  15. 15MD

    Hey HN, I’m an engineer at Supabase [0] and one of the creators of this demo. My team and I have been working hard to bring developers the next version of Supabase Realtime. The current version of Realtime [1] is a Change Data Capture (CDC) server for a PostgreSQL database that broadcasts changes via WebSockets to authorized subscribers. It’s written in Elixir/Phoenix. The server utilizes PostgreSQL’s logical replication functionality, which writes database changes to Write-Ahead Logging (WAL) segment files, and a replication slot, responsible for managing and retaining WAL files.…

    2022 · multiplayer.dev · its alternatives →

  16. 16

    Hi everyone, If you have a Java Spring Boot application with a PostgreSQL database, you can implement Event Sourcing without introducing new specialized databases or frameworks. If you have an application dealing with an entity called Order, you should adopt Event Sourcing to keep track of all changes, and know how the Order got into the current state. Event Sourcing gives you: 1. the true history of the system (audit and traceability), 2. the ability to put the system in any prior state (debugging), 3. the ability to create read projections from events as needed to respond to new demands.…

    2023 · github.com · its alternatives →

  17. 17HD
  18. 18

    Minimal circular video calls that start with a "door" knock

    Dec 2025 · apps.apple.com · its alternatives →

  19. 19
    Rupert▲194

    Push data to Slack with Rupert's no-code alert builder

    2024 · hirupert.co · its alternatives →

  20. 20
    Hookdeck▲243

    From webhooks to external event streams, Hookdeck ensures every event is received, processed, and monitored reliably at scale, giving you complete visibility and control.

    2021 · hookdeck.com · its alternatives →

  21. 21

    Instantly access your medical info with just a tap

    2022 · knockid.com · its alternatives →

  22. 22
    Knock▲71

    Making your connected life better for you and your family

    2016 · myknock.com · its alternatives →

  23. 23
    RoloChat▲119

    Chat directly with your HubSpot data for quick insights

    2024 · rolochat.com · its alternatives →

  24. 24

    Reliable webhook delivery, with debugging and logging

    2021 · hookrelay.dev · its alternatives →

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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →