About Castbreeze
Building the future of audio streaming for smart speakers
Our Mission
Castbreeze is an audio streaming platform that makes it effortless to control your smart speakers from anywhere. We believe audio streaming should be simple, powerful, and accessible to everyone.
What started as a Chrome extension for Sonos has evolved into a comprehensive ecosystem of tools that empower users to stream audio, automate playback, and integrate speaker systems with their favorite apps and workflows.
Our Products
Cast to Sonos
AvailableOur flagship Chrome extension with 10,000+ active users. Stream audio from any browser tab to your Sonos speakers - YouTube, podcasts, local files, and more.
Visit casttosonos.com →Zapier Integration
Coming SoonAutomate your speaker system with 7,000+ app integrations. Create workflows for notifications, scheduled playback, and smart home automation.
MCP Server
Coming SoonAI-powered speaker control for developers building intelligent audio applications with the Model Context Protocol.
Technology
Built on modern web technologies with a focus on security, performance, and reliability:
- Real-time streaming capabilities
- Cloudflare Workers for global edge deployment
- TypeScript for type safety and reliability
- WebSocket support for live audio streaming
Team
Sem Postma
Founder & Developer
Building tools that make audio streaming accessible and powerful for everyone.