d20Tek Services

New: Functional programming style for C# — results, options, and railway-oriented workflows.

Welcome to d20Tek

D20Tek is a collection of developer tools, libraries, and tutorials focused on building modern .NET Applications that range from simple command-line applications to modern Blazor applications to multi-platform Avalonia apps.

You can follow along with our weekly Dev Logs to keep up with the latest developments.

Latest Articles & Tutorials

Technical articles and step-by-step guides for building modern .NET applications - Full list

GitHub Actions Require NuGet Trusted Publishing

Migrate your GitHub Actions workflow from long-lived NuGet API keys to Trusted Publishing.

Migrating from Blazored.LocalStorage to BrowserStorage

Step-by-step guide to replacing Blazored.LocalStorage with modern, async D20Tek.Blazor.BrowserStorage library.

Eliminate Double‑Fetch in Blazor Prerendering with PersistentComponentState

How to use `[PersistentState]` to avoid double-fetching data in Blazor prerendered components.

Basic Spectre.Console Example

Learn how to build rich, interactive command-line tools using the Spectre.Console library

Fixing Blazor WebAssembly Deep Linking

How to fix Blazor WASM deep links with `staticwebapp.config.json` with proper cache-control headers

Full Spectre.Console Tutorial

An end to end tutorial to build rich terminal applications with Spectre.Console library

Make Time Testable with TimeProvider

Learn how to make time testable in your application by using the new .NET TimeProvider class

Project Highlights

Explore some our most popular hosted projects and NuGet packages. And see the full list of projects too.

Blazor BrowserStorage

Type-safe browser local/session storage for Blazor with change notifications and bulk operations

Gridlock

A daily number puzzle game

Notepad Tui

Version of Notepad that runs in your terminal

Blazor Components

Set of helpful Blazor components

Dice Notation

Library to parse and roll DiceNotation strings

Functionally

Library to build functional programming style in C#

Spectre.Console Extensions

Helpful set of extensions for writing Spectre.Console applications

LowDb

Lightweight local JSON database for .NET applications

Our approach is simple: understand your challenges, craft elegant solutions, and deliver results that exceed expectations. Let us be your trusted partner in navigating the ever-evolving technology landscape.