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GeezerVison is showing managed-code.com — Open Source .NET Libraries and AI Tools — Managed Code

We maintain more than 30 open-source projects on GitHub — AI tooling, .NET infrastructure, and Microsoft Orleans extensions, all built to solve problems we hit on real projects.

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30+

repositories

1M+

NuGet downloads

900+

GitHub stars

100%

in production

Retrieval & orchestration

GraphRAG

Graph-based RAG in C# that links documents through entity relationships — so when key information lives in a separate document, the entity graph finds it rather than relying on keyword overlap alone. Powers several client AI agent projects.

MCP Gateway

Searchable MCP and AI tool gateway built on Microsoft.Extensions.AI — finds the right tool using embeddings, falls back to lexical search, and runs tools from multiple AI providers through one unified interface.

.NET Skills

Open repository of installable skills for Codex, Claude Code, GitHub Copilot, and Gemini. Browse, install, and share ready-made agent behaviors through a CLI instead of writing prompts from scratch.

SDKs & runtimes

MLXSharp

First .NET wrapper for Apple MLX, integrated with Microsoft.Extensions.AI — runs ML models locally on Apple Silicon through familiar .NET interfaces with prebuilt native binaries for macOS and Linux.

CodexSharpSDK

CLI-first .NET SDK for OpenAI Codex with typed thread API, streamed JSONL events, and structured outputs.

ClaudeCodeSharpSDK

CLI-first .NET SDK for Claude Code with typed thread API, streamed JSONL events, and structured outputs.

GeminiSharpSDK

CLI-first .NET SDK for Google Gemini CLI with typed thread API, streamed JSONL events, and structured outputs.

Data & compliance

Presidio

C# framework for finding and removing sensitive data in text, images, and structured data — NLP, pattern matching, and custom pipelines for compliance use cases.

MarkItDown

Converts Word, Excel, PowerPoint, PDF, and HTML to clean Markdown for RAG pipelines and knowledge management systems that need clean text from messy source files.

Storage

Unified .NET interface for Azure Blob, AWS S3, and Google Cloud Storage — one consistent API, no rewrites when switching providers. Handles millions of file operations daily in production.

Communication

Railway-oriented result pattern replacing exceptions with type-safe return values. ASP.NET Core integration with RFC 7807 Problem Details and built-in pagination for explicit error handling.

MimeTypes

Strongly-typed MIME type properties in C# — compile-checked values instead of error-prone string literals scattered across the codebase.

Orleans.SignalR

Real-time SignalR in distributed Orleans systems without a separate backplane — simplifies deployment and reduces operational overhead in multi-silo setups.

Orleans.RateLimiting

Rate limiting algorithms built specifically for Orleans using grain-aware throttling — controls request flow across multi-silo applications.

Orleans.Identity

ASP.NET Identity on top of Orleans with cross-cluster session management — authentication state follows users regardless of which silo handles their request.

Orleans.StateMachine

Enforces valid state transitions in distributed workflows — grew out of production systems where uncontrolled transitions caused cascading failures difficult to trace.

Orleans.Graph

Manages and validates grain call transitions — define which communication patterns between grains are allowed and catch unexpected call paths before they cause problems.

PrompterOne

browser-first teleprompter studio

A complete teleprompter studio in .NET 10 and Blazor WebAssembly. Script authoring, RSVP rehearsal, and live recording — everything runs in the browser with no server, accounts, or cloud storage. Shipped in seven calendar days from concept to production.

app.prompter.oneapp.prompter.one

DotPilot

local AI agent orchestrator

A local-first desktop app running AI agents on your machine. Built on Microsoft Orleans and the Microsoft Agent Framework — one control plane for multiple agents. Adapters for Codex, Claude Code, GitHub Copilot, and local runtimes.

dotpilot.managed-code.comdotpilot.managed-code.com

MCAF

Managed Code Agent Framework

The open-source framework that makes AI-generated code safe for production. Enforces project-specific rules, runs layered checks, and puts quality gates on every commit. Runs on every client project and every product we build.

mcaf.managed-code.commcaf.managed-code.com

TPS

TelePrompterScript format

A Markdown-based file format for teleprompter scripts with a five-level hierarchy and 14+ emotion markers, volume control, speed in words-per-minute, and pronunciation guides. Parser SDKs in TypeScript, .NET, Flutter, Swift, and Java.

tps.managed-code.comtps.managed-code.com

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