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Vask

Provides a Pusher-compatible WebSocket service that charges per publish, not per subscriber, reducing costs.

vask.devDeveloper ToolsMay 2026Thornton-Cleveleys, United KingdomADDFUEL LTD

A WebSocket service that is compatible with Pusher, allowing developers to use existing Pusher SDKs without modification. It solves the problem of high costs and fan-out fees by charging per publish rather than per delivery, reducing bills by up to 70%. The service is targeted at developers and engineering teams, especially those already using Pusher, and is positioned as a drop-in replacement with generous limits and a free tier. It is built on Cloudflare's edge network, ensuring low latency and high availability.

Key features

  • Pusher protocol compatible
  • No fan-out fees
  • Generous free tier
  • Unlimited apps
  • Presence channels
  • Client events
  • Sub-50ms p99 latency
  • 330+ Cloudflare PoPs
  • Drop-in migration with env vars
Social posts
  • No social media activity within the last 30 days
GTM channels
  • API
  • Docs
ICP
  • Software developers
  • Engineering teams
  • Startups