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Knock

Push Messaging

PowerSync

Backend Data

Popular to compare with Knock

Comparison of Knock, PowerSync
Knock
Visit website
PowerSync
Visit website
CategoryPush MessagingBackend Data
Pricing–FreemiumFree cloud account available
Platforms
  • Web
  • API
  • Web
  • iOS
  • Android
Best for
  • Developers
  • Product teams
  • Growth teams
  • Offline-first app teams
  • Backend teams
  • Real-time app builders
Highlights
  • Build workflows with triggers, delays and branches
  • Send email, in-app, push, SMS and chat messages
  • Run an agent step to personalize content
  • Sync Postgres, MongoDB, MySQL and SQL Server data
  • Keep a local SQLite database on each device
  • Push real-time updates into the app
GitHub stars–403
Last update–3 days ago

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  • Web Tools Finder (WTF) is a curated directory built by developers and designers for web developers, designers, vibe coders, and freelancers. It brings useful tools and resources together in one place, helping you save time, discover better resources, and bookmark your favorites for free, without signing up.

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  • Use the Search Directory, or press Ctrl K (Cmd K on a Mac) to search from any page. Each section lists its tools by category, and when tools have pricing details you can filter by price, such as Free, Freemium or Paid. Open a tool to read its description, highlights and details, and save the ones you like.

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  • It shows how many tools were added to that section in the last 7 days. The label disappears once you open the section.

  • The AI Prices page is checked every day against two independent public sources, and a price is listed only when both agree. Prices can change at any time, so always confirm with the provider before you build on a price.

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  • They come from GitHub star counts, which refresh automatically every day. Stars show how popular a project is, not how good it is for your project.

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  • Yes! You can submit your tool, resource, or agency through our submission options. Our team reviews each submission according to our listing guidelines and policies. We'll contact you regarding the review, eligibility, and next steps before your listing is published.

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  • They mark paid or partner placements. Those listings are not recommendations from Web Tools Finder, and they are labelled clearly so you can tell them apart from the rest of the directory.

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  • Use the Feedback button in the menu and choose Something is broken, or write to us from the Contact page. We also check tool links regularly and review the ones that stop working.

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