Software Alternatives, Accelerators & Startups

Knock App

Power your product notifications with Segment and Hightouch.

Some of the top features or benefits of Knock App are: User-Friendly Interface, Seamless Integration, Comprehensive Analytics, and Time-Saving Automation. You can visit the info page to learn more.

Best Knock App Alternatives & Competitors in 2025

The best Knock App alternatives based on verified products, community votes, reviews and other factors.
Filter: 12 Open-Source Alternatives. Latest update:

  1. 16

    Single Notification API for Every Channel (SMS, Slack, Whatsapp, Email, SMS, Push, App Inbox)

    Open Source freemium $99.0 / Monthly

    /suprsend-alternatives
  2. 15

    Your app needs a notification inbox – with real-time sync, web & mobile push, and a UI that matches your brand.

    /magicbell-alternatives
  3. Flagsmith lets you manage feature flags and remote config across web, mobile and server side applications. Deliver true Continuous Integration. Get builds out faster. Control who has access to new features. We're Open Source.

    Try for free Open Source freemium

    Try for free
  4. The ultimate library for managing multi-channel transactional notifications with a single API.

    Open Source

    /novu-alternatives
  5. Courier is a notification API built for developers. Design once, and deliver to any channel – email, Slack, SMS, push, and more – all through a single API.

    /courier-alternatives
  6. 11

    Customer engagement platform used by over 1 million developers and marketers; the fastest and most reliable way to send mobile and web push notifications, in-app messages, emails, and SMS.

    Open Source freemium $9.0 / Monthly (Plus usage-based costs. (Growth Plan). )

    /onesignal-alternatives
  7. Pusher is a hosted API for quickly, easily and securely adding scalable realtime functionality via WebSockets to web and mobile apps.

    Open Source

    /pusher-alternatives
  8. Unleash limitless possibilities with Truepush and save up to $600 monthly. Free up to 10K Subscribers on all features.

    Open Source free

    /truepush-alternatives
  9. 10

    Engage your mobile and desktop web users with intelligent web push notifications.

    /izooto-alternatives
  10. A managed and scalable solution for easily creating and managing user notifications.

    freemium

    /notificationapi-alternatives
  11. A simple tool for previewing push notification copy

    /push-notification-preview-alternatives
  12. Learn when your site is mentioned by other sites for free

    /mentioned-by-alternatives
  13. Re-engage website visitors with push notifications

    /pushowl-alternatives
  14. Send push notifications programmatically at scale

    /pusher-beams-alternatives
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