.NET engineer building ZeroAlloc.NET, compile-time .NET without reflection,
and AI libraries for .NET: agents, RAG, decisions and security. Based in the Netherlands.

245+ NuGet packages  ·  2.9M+ downloads

Two things get most of my time: moving .NET work from runtime to compile time, so it is fast, allocation-free and Native AOT safe, and giving AI agents in .NET the building blocks they are missing: a framework, retrieval, calibrated decisions, guardrails and real tools.

A 100+ package ecosystem where every dispatch, registration, mapping and validation rule is wired at compile time by a Roslyn source generator — no reflection, no boxing, Native AOT safe throughout.

github.com/ZeroAlloc-Net · zeroalloc.net

Library	What it does	Package
Mediator	Dispatch resolved at compile time — no dictionaries, no virtual calls
ORM	Raw-SQL data access from [Query]/[Command] partial methods
Inject	Compile-time DI with a standalone AOT container
Analyzers	Flags allocations, boxing and virtual dispatch on hot paths
EventSourcing	Event streams, projections and aggregates, generated
Templates	dotnet new Clean Architecture API wiring 12 of the libraries together

_{Plus Rest, Saga, Outbox, Pipeline, Scheduling, Serialisation, StateMachine, Resilience, Validation, ValueObjects, Results, Collections, Mapping, Telemetry, Specification, Authorization, AsyncEvents, Cache, Notify, Flux, TestHelpers and more.}

A family of libraries for building AI agents in .NET on Microsoft.Extensions.AI, several of them built on ZeroAlloc.

Project	What it does	Package
Thalos.NET	ZeroAlloc-native agent framework on Microsoft Agent Framework, with AI.Sentinel security and MCP tool sources
Rag.NET	Modular RAG pipeline — 74 packages covering chunking, vector stores, rerankers, data providers, evaluation
Minos.NET	Unofficial client for TypeSafe's Jev decision models — typed questions in, calibrated probabilities out; source-generated, Native AOT safe
AI.Sentinel	Security middleware for IChatClient — 56 detectors for the OWASP LLM Top 10
Daedalus.NET	Reference application for Thalos.NET — AI task execution with Railway-Oriented Programming, Blazor and console front ends, orchestrated by Aspire	—

MCP servers that give agents real understanding instead of a text search.

Project	What it does	Package
roslyn-codelens-mcp	67 tools exposing Roslyn semantic analysis — call graphs, DI graphs, diagnostics, code fixes, refactoring, test intelligence
memorylens-mcp	.NET memory profiling — in-process heap snapshots, leak heuristics, actionable fix suggestions
LongtermMemory-MCP	Persistent semantic memory, fully local — SQLite + a local transformer, no API keys

_{More libraries, analyzers and tools: roozekrans.nl/projects.}

_{Cards by ghstats.dev — regenerated on every page load.}

If my open source work saves you time, consider sponsoring to help me keep maintaining and building more.

What sponsorship funds:

• Continued maintenance of the ZeroAlloc.NET packages
• New features and .NET version upgrades across all projects
• More MCP servers and AI tooling for .NET developers
• Time I can spend on OSS instead of client work