Nextcloud Talk

Nextcloud Talk is a privacy-respecting, self-hosted communication platform that combines chat, video conferencing, and webinars in a single Nextcloud app. It supports on-premises deployment and federated collaboration across Nextcloud servers, with end-to-end encrypted calls and deep integration with other Nextcloud apps.

Key Features

• Threaded conversations with AI chat and call summaries
• End-to-end encrypted calls for private communication
• Federated chat and video calls across Nextcloud hubs and servers
• Webinars and presentations with screen sharing and participant controls
• Private, group and public calls with external participants via shareable links
• Tight integration with Nextcloud Files, Calendar and other apps for unified workflows
• Bridging with other networks via Nextcloud Bridging (e.g., IRC, Slack, Teams, Matrix)

Use Cases

• Hybrid teams needing private, on-premises collaboration across chat, calls and webinars
• Environments requiring GDPR/compliance and air-gap/self-hosted deployment
• Organizations collaborating across multiple Nextcloud servers or bridged networks

Limitations and Considerations

• NAT traversal often requires a TURN server for reliable media in restricted networks; behind symmetric NATs this becomes more critical
• Large-scale deployments usually need High Performance Backend (HPB) for thousands of participants; private setups typically handle dozens of calls depending on capacity
• Some advanced features depend on specific server components or configurations and may require additional infrastructure

Conclusion: Nextcloud Talk offers a privacy-first, self-hosted alternative for integrated chat, calls and webinars within the Nextcloud ecosystem. It emphasizes data control, security and federated collaboration, with deployment paths suitable for small teams up to large enterprises.