danfma 

A fast, in-memory spreadsheet formula engine for .NET: parse Excel-style formulas, evaluate them with ~40 built-in functions, custom functions, per-cell memoization, and MemoryPack serialization.

MSBuild integration for Metano — automatically transpiles annotated C# types to TypeScript on dotnet build.

Excel (.xlsx) interop for Danfma.MySheet: load workbooks (values and formulas) into the MySheet engine, export workbooks to .xlsx and merge computed values into existing files — cross-platform via the OpenXML... More information

Pessimistic locks for RavenDB

A port of the excellent TurfJs library to .NET on top of existing libraries like NetTopologySuite and UnitsNet.

Annotations and BCL runtime mappings for the Metano C#-to-TypeScript transpiler

TypeScript target for the Metano transpiler — CLI tool that converts annotated C# types to TypeScript

Target-agnostic core library for the Metano C#-to-TypeScript transpiler

Faithful .NET port of TurfJS over its own GeoJSON types — zero dependencies, AOT-ready.

NetTopologySuite interop for Turfano: the NtsConvert boundary bridge (packed, zero-Coordinate) and the NTS-backed Buffer extension.