Choosing the Right RPC Framework for .NET
A hands-on review of WitRPC, SignalR, gRPC, and CoreWCF
Takeaways
- The fastest way to choose an RPC framework for .NET is to start from the clients: all-.NET systems, polyglot systems, and mass browser fan-out lead to different answers.
- When both client and server are .NET, WitRPC covered the widest range of scenarios in this comparison (IPC, services, Blazor WebAssembly) with one strongly-typed model, and led the measured benchmarks both locally and remotely. Its limits are .NET-only reach and the absence of a mass fan-out story.
- gRPC is the standard for polyglot microservices, with strict contract enforcement, streaming, and multi-language tooling. In these tests it needed tuning for large payloads.
- SignalR remains the choice for server push to many concurrent clients, especially browsers, with automatic transport fallback and proven scale-out infrastructure.
- CoreWCF is primarily a migration path for legacy WCF and SOAP interoperability, and was the slowest option measured. For new...
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