Multi-protocol API workbench for .NET — discover, invoke, record, mock, replay across gRPC, REST, GraphQL, MQTT, SignalR, WebSocket, SSE, MCP, OData, Socket.IO, and more... including your custom protocol.
Terminal API client for HTTP, GraphQL and gRPC. Plain .http files you can diff and version, with workflows, mocks, profiling, tracing, OpenAPI import, SSH tunnels, Kubernetes port-forwards, WebSocket, SSE and a CLI runner.
Build real-time Blazor and MAUI apps while writing just 0.1% of the usual real-time update code. Handle 10× more API requests with the ActualLab.Rpc protocol—or 1000× more with Fusion’s transparent and perfectly coherent caching.
C#/.NET Roslyn analyzer with 36 diagnostics and code fixes for CancellationToken propagation, async/await, ASP.NET Core, EF Core, HttpClient, gRPC, blocking I/O, and sync-over-async.