Dave Kerr

🧠 Laws, Theories, Principles and Patterns for developers and technologists.

SharpShell makes it easy to create Windows Shell Extensions using the .NET Framework.

Use OpenGL in .NET applications. SharpGL wraps all modern OpenGL features and offers a powerful scene graph to aid development.

ConsoleControl is a C# class library that lets you embed a console in a WinForms or WPF application.

Text, samples and website for my 'Effective Shell' series.

Modal service for AngularJS - supports creating popups and modals via a service.

Icon management for Mobile Apps. Create icons, generate all required sizes, label and annotate. Supports Native, Cordova, React Native, Xamarin and more. Inspired by cordova-icon.

Simple binary to wait for a port to open. Useful for docker-compose and general server side activities.

It's DynamoDB - in Docker!

Classic Space Invaders game written in JavaScript as a learning exercise.

Create infrastructure with Terraform and AWS, install OpenShift. Party!

Demonstrates how to build a testable, deployable, scalable microservice with NodeJS and Docker.

Unopinionated AI for the Shell. A lightweight AI CLI for scripts, pipelines, and automation, with a universal client for MCP, A2A, and other AI protocols. .

My personal setup. Vim, Tmux, Shells, etc.

Tiny, lightweight crossword control for the web.

CLI to monitor the status of a MongoDB cluster real-time 📈

A set of standards, patterns and principles for development projects. Use with AI and your development team, evolve for your needs.

A nice starfield background using built using HTML and vanilla JavaScript as a learning exercise.

Demonstrates how to create a resilient Consul cluster on AWS, using Terraform. Companion to my article on dwmkerr.com.

GlmNet is a .NET version of the excellent OpenGL Mathematics library (GLM).

A project to help define architecture logically as code, and generate living, interactive diagrams.

A simple Linux Kernel Module, written as a learning exercise.

Playwright for the shell - MCP server for terminal recording and automation

GAC Manager is an open source project that comes in two parts - a fully functional application to manage the Global Assembly Cache on your computer, and a C# API to allow you to manage the GAC yourself.

Langton's Ant implemented in Javascript

A small and leaky AngularJS application used to demonstrate how to identify, analyse and resolve memory leaks in JavaScript applications. A companion to the write-up at www.dwmkerr.com/fixing-memory-leaks-in-angularjs-applications

Automatic splash screen generation and resizing for Mobile Apps. Supports Native, React Native, Cordova, Xamarin and more. The little brother of 'app-icon'.

This simple module demos how to use Conventional Commits, Git Hooks to enforce Conventional Commits and Semantic Versioning in a Java project built with Maven.

A simple .NET library to load data from Wavefront *.obj and *.mlb files.

Sil is an application and addin for Visual Studio that lets you disassemble your C# code.

Skills for problem solving, creating slides, software engineering and more. Claude Code or any other coding agent.

Command line tool to quickly look something up on Google!

Regularly updated list of AI providers and models, available for mulitple languages and platforms.

A Chrome browser extension that renders diagrams in the ChatGPT website inline.

A simple, unit and integration test friendly wrapper around the Windows Registry, which is 100% compliant with the existing Microsoft.Win32.Registry package.

This repository demonstrates some beautifully simple techniques for handling CI and CI for mobile apps. These techniques are appliclable to many mobile technologies and development platforms and compliment many different CI/CD toolchains.

A set of ideas and projects to work on that are great to help you learn a programming language.

A base image for working with Terraform in CI scenarios. Provides Terraform, tflint, AWS CLI, etc.

A simple starter template for a React ES6 web app

A starter kit for building chatbots using AWS Lex and Lambda.

Simple OpenAI compatible Mock API server. Useful for deterministic testing of AI applications, LLMs, MCP and A2A.

A simple snippet that allows you to quickly add a 'help' command to a Makefile to show command documentation.

Switch is an Addin for Visual Studio that lets you quickly switch between related files, such as *.cpp and *.h or XAML and code-behind.

Procedurally animated smiley face with SVG and pure JavaScript 😀🙂😐🙁☹️

Access the ImageMagick CLI tools from Node. No dependencies, cross-platform, with support for ImageMagick 6 and 7.

Speed up your git flow with these advanced techniques.

Practical tips and patterns for building good container citizens

Run Claude Code as an isolated and containerized A2A agent - orchestrate multiple sessions with full visibility on Claude operations and messages. Configure marketplaces, plugins, MCP servers and more.

FireKeys is a Windows Application that lets you assign hotkeys to your favourite programs, URLs or actions.

A simple CLI for chatting to AWS Lex ChatBots. Great for development!

An example terraform module to create an AWS VPC with a cluster of web servers.

Useful guides, documents, snippets for working with tech.

:trophy: Automate versioning and CHANGELOG generation, with semver.org and conventionalcommits.org

JsonClient .NET is a lightweight .NET class library that lets you access Json web services

Handle mongodb connection strings with ease.

☁️🐳 Spin up microservice platforms on the cloud in seconds - use it to evaluate them or try new technologies!

This is the install script for the https://effective-shell.com samples. This repo hosts the https://effective.sh installer.

Windows utility to allow quick selection of accents and symbols to the clipboard.

ContentEditableMvc is a small library for ASP MVC 4 web pages that lets you use the power of the HTML5 contenteditable attribute and Ajax to update content from the client.

This simple module demos how to use Conventional Commits, Git Hooks to enforce Conventional Commits and Semantic Versioning in a Java project built with Maven.

Great specs can be in markdown.

😎 Awesome lists about all kinds of interesting topics

The 'dwmkerr.com' website content and setup. Static site managed with Hugo.

Open source A2A proxy server for AWS Bedrock AgentCore agents

The COM Admin library provides APIs to manage the installation and registration of .NET Framework and .NET Core COM Servers and Shell Extensions

My personal preferences for a base HTML5 page - includes a css reset and some minor typography tweaks, as well as hyperlink styling.

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A Debian Image will the most popular shells pre-installed. Useful for comparing features between shells.

A set of Powershell functions to help with vsix files.

Presentation, code samples and notes for a talk at JSChannel 2016

Edit markdown locally, share it live.

GitHub action to run AI commands as part of pipelines.

A super simple microservice I often use when demoing docker. Spits out quotes from Zapp Brannigan!

A simple tool which helps when working with environment variables, devops and 12 factor apps.

A general repo for F# projects as learning exercises.

Build an Amazon Elastic Container Services Cluster with Terraform.

Create infrastructure with Terraform and AWS, install Kubernetes. Party! http://www.dwmkerr.com/get-up-and-run…

A Homebrew Tap for tools which I maintain and publish.

Provider-agnostic operations for agentic resources. ARK codifies patterns and practices developed across dozens of agentic application projects.

Agents, tools, MCP servers, integrations and more for Ark

Git worktrees organised into a simple and predictable folder structure

Keep track of your favourite tips, shortcuts, hacks for tools. Per user, per project. Built using Obra Superpowers as part of an agentic AI workflow development assessment.

Quick access to your cloud instances.

GameBoard is an app for keeping track of board game scores.

A collection of common interactive command line user interfaces.

Tests for the terminal-ai-action

An Inquirer.js input prompt that offers 'hints' displayed below the input field, useful for providing instructions to users.

GPX routes for hiking, running, scrambling and so on. Very much a work in progress.

Deus Novum is an HTML5/JS game that lets you take control of a Universe - manipulate time, space and physics to complete challenges.

The 'experiments' page of my site. This is a general HTML page that can be used as an index to a set of experiment projects.

Deliberately crash your app. Good for testing crash reporting services.

Simple configuration for Node applications, load from files, environment variables or parameters.

A set of experiments in Python, good for learning.

Terraform AliCloud provider

Markdown-formatted Creative Commons licenses

A demo repository showing how Slack can be useful when building backend systems

Version management for Mobile Apps. Simple tool to set version for Native, React Native, Cordova, Xamarin and more.

Starter project for Node.js.

Modern, Simple and beautiful Hugo theme

Repository of helm charts for deploying DataHub on a Kubernetes cluster

generate release PRs based on the conventionalcommits.org spec

A Generalized Metadata Search & Discovery Tool

Jump to any agent session across Cursor, Claude Code, OpenCode and more. See all your chaos in one place and feed your need to context switch.

This is just a working space for projects I'm messing around with or ones which don't justify their own repo.

Statements of work for testing long-horizon agent capability

Drive OpenSpec spec-driven development from GitHub issues. Label an issue, get a spec PR. Merge it, get an implementation PR.

A curated list of awesome command-line frameworks, toolkits, guides and gizmos. Inspired by awesome-php.

A simple public index of wellness resources for Cumbria — one-page weekly yoga calendar for the Kendal/Levens area.

Claude Code is an agentic coding tool that lives in your terminal, understands your codebase, and helps you code faster by executing routine tasks, explaining complex code, and handling git workflows - all through natural language commands.

Reusable GitHub Actions workflow for running AI agents across repos

GitHub Action to test Claude Code skill routing with declarative YAML manifests

An interactive visual guide to large language models.

Are you OK Claude?

Prediction and speculation for AI in 2026

Validation Tools for A2A Agents

Specification and documentation for the Model Context Protocol

Useful snippets and patterns that can be added to your open source projects to make them more contributor friendly.

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Experimentation project for a climbing trip planner app

Visualise and track key life events with an interactive timeline

A template for a Node.js module that has basic standards for linting, testing, build pipelines, NPM deployment, documentation and contributors.

Generate Leanpub 'Markua' based manuscripts from GitHub Flavoured Markdown or Docusaurus Markdown

Minimal code sample that reproduces an import issue between parcel/mermaid

Very basic utility functions for Node.js. No dependencies.

Work in progress. An old hobby project I was working on, likely to be archived in the future.

A Jekyll theme

Simple Node.js for working with Chrome Heap Snapshots.

A simple .NET library to load data from Autodesk 3D Studio Max *.3ds files.

VS Addin Tools is a collection of scripts and utilities that are useful when building Visual Studio Addins

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Kubernetes community content