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Iceshrimp.NET

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ActivityPub-based federated social networking server

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Iceshrimp.NET screenshot

Iceshrimp.NET is a decentralized and federated social networking service that implements the ActivityPub standard. It continues the legacy of the Iceshrimp project with a new codebase focused on performance, stability, and maintainability.

Key Features

  • ActivityPub federation for decentralized social networking
  • Resource-efficient backend built on .NET
  • Web frontend built with Blazor WebAssembly
  • Configurable, HTML-only public preview for unauthenticated visitors
  • Mastodon-compatible API intended to work with a broad range of Mastodon clients
  • Migration path for existing Iceshrimp-JS instances

Use Cases

  • Run a community-focused fediverse instance for an organization or interest group
  • Host a personal or small-community social server while remaining compatible with common Mastodon clients
  • Experiment with ActivityPub federation and client interoperability in a .NET-based stack

Limitations and Considerations

  • Client compatibility depends on the Mastodon-compatible API surface and may vary by client features
  • As an actively developed new codebase, features and behavior may change between releases

Iceshrimp.NET is a solid option for operators who want an ActivityPub server with a modern .NET backend and a Blazor-based web UI, prioritizing performance and long-term maintainability.

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