Mainmatter ORG

A self-paced course to learn Rust, one exercise at a time.

A structured course of 100 hands-on exercises for learning the Rust programming language from scratch, aimed at programmers who have some coding background but no prior Rust experience.

Build a comprehensive toolkit to detect, troubleshoot and resolve issues with Rust applications.

A library for implementing authentication/authorization in Ember.js applications.

High Level DOM Assertions for QUnit

Gerust is a project generator for Rust backend projects. It takes care of the accidental complexity so you can stay focused on what matters.

Sheepdog – herd your async tasks!

Enabling better element selectors in Ember.js tests

A course to move beyond the built-in Rust testing toolkit.

(Auto)DRY for your Rust dependencies

Just like `serde`, but with more exhaustive error reporting capabilities. Designed for public API payloads.

Source Code analysis gem for Ruby and Rails

Lightweight Rails Engine that implements the "Resource Owner Password Credentials Grant" OAuth 2.0 flow as well as Facebook authentication

Syntax Higlighting plugin for Ruby on Rails

Cookies abstraction for Ember.js that works both in the browser as well as with Fastboot on the server

A POC for the svelte-lynx integration

"Abstract Syntax Forestry" workshop for EmberConf 2020

A self-paced course to write Python extensions in Rust, one exercise at a time.

Air Quality Data for Locations around the World

Ember CLI Adon for the Ember Simple Auth library

Find missing or unused translations in your Ember.js projects

Stripping whitespace out of your Handlebars templates

A validated form buffer that wraps Ember Data models for use in forms.

GitHub action to add comment when a continue-on-error job fails

Air Quality Data for Locations around the World

Modals in Svelte made easy. Promised.🤞

The easy solution for rendering and handling modals in Ember.js apps. Promised.

A CLI tool to drive test-driven Rust workshops

Example project showing how to use Ember Simple Auth with Ember CLI

QUnit plugin that groups console messages by test

Comment with the diff for the asset sizes on Pull Request

Ember CLI Addon for the Ember Simple Auth Devise package

The source code for https://mainmatter.com

Ember CLI Addon for the Ember Simple Auth OAuth 2.0 package

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Ember CLI Deploy plugin for calling webhooks during deployments

A book describing the patterns and practices that Mainmatter uses to build lasting products, systematically.

An Ember addon for Class based Computed Properties

Basic codemod to automatically convert your assertions to qunit-dom assertions

ESLint plugin for ember-concurrency users

The example apps for simplabs' Ember.js Workshop

An Ember CLI Addon that wraps pixi.js

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Ember CLI Addon for the Ember Simple Auth Testing package

Migrate Emblem.js to pretty Handlebars files

Implementation of the OSDM API spec's Places API, backed by Trainline EU's stations dataset

GitLab/JUnit reporter for testem

Ember CLI Addon for the Ember Simple Auth Cookie Store package

Ember.js addon allowing you to easily implement non-CRUD actions for your Ember Data models

ember-template-lint plugin for ember-css-modules

Ember CLI Addon for the Ember Simple Auth Torii package

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Demo project using the rails_api_auth engine

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Mailer for the contact form on mainmatter.com – Cloudflare worker written in Rust

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Create interactive prototypes from scratch and design mockups using little code but the full power of the Ember.js ecosystem.

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Generic asset size comparison and reporting tool

Mocha's diff algorithm extracted for anyone to use 🎉

Bower repository for Ember Simple Auth

A sensible default implementation of scrolling for Ember apps, aiming to mimic static site behaviour.

Measure your build, app start up, and rebuild times in one go

Experience Rust by writing an image-processing service

This is the Rust course used by the Android team at Google. It provides you the material to quickly teach Rust.

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An ESLint plugin for qunit-dom that automatically fixes the most common issues.

Emberfest 2025 multiframework mashup example app

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A migration guide from ember-css-modules to ember-scoped-css

EuroRust landing page

DayRelay is a personalized news aggregation app for collecting, organizing, and reading updates from the sources you choose. This project was created for a YouTube series about agentic engineering with Svelte.

Adds an Ember tab to the browser's Developer Tools that allows you to inspect Ember objects in your application.

A workshop that takes participants through the entire process of building a complete, real-world SvelteKit application.

Mainmatter Rust Assessment

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Combine formatjs API with ember-intl

Trash In, Treasure Out blog post companion repo

Small utillity to check if script was run with npm or yarn

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ESLint config for all simplabs projects

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Monorepo to experiment a Vite import.meta.glob-like implementation for Ember classic

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Ember.js - A JavaScript framework for creating ambitious web applications

Basic Ember app to chat about Ember 3.28+ migration

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RFCs for changes to Ember

Exploring new approaches to the Inspector API

experiementing with a route manager

Nix environment for redisearch disk code

Eleventy plugin to generate JSON-LD structured data.

Nix flakes development environment for contributing to RediSearch

Simple flake to compile a custom Redis from source

WarpDrive is the lightweight data library for ambitious web apps — universal, typed, reactive, and ready to scale.

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A GitHub Action to set up TeX Live

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Repo for the MCP server workshop

Instrumentation for JavaScript Applications

Raise calculator

Deprecation guides for ember.js, ember-data, and ember-cli

Example repository for the blog post "Mock database in Svelte e2e tests with drizzle and playwright fixtures"

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Render a child view somewhere else in the DOM.

Serializes and restores the ember-data store for fastboot

The monorepo home to all of the FormatJS related libraries, most notably react-intl.

Internationalization for Ember projects

Industry standard API mocking for JavaScript.

The Tailwind CSS documentation website.

Official website and documentation for the Mock Service Worker library.

:package::rocket: Fully automated version management and package publishing

Universal JavaScript client for Storyblok's API

A set of headless, accessible component builders for Svelte.

The Svelte omnisite

Dummy repo used to test the Gravity Github App

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Nuxt CLI

A utility-first CSS framework for rapid UI development.

Cybernetically enhanced web apps

Open Graph image generator for crates.io

Dataframes powered by a multithreaded, vectorized query engine, written in Rust

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Faster ts-node without typecheck

Intersection Observer Admin for better performance

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Code from the sveltekit workshop of 23 Feb 2024

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Erlang Ecosystem Foundation Website

Workshop app for EmberConf 2023

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Asteroids implementation using Glimmer.js

The mono-repo for the core Cardstack framework.

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The source code for http://elixir-phoenix-workshops.simplabs.com

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Kimai v2 is a web-based multiuser time-tracking application. Free for everyone: freelancers, agencies, companies, organizations - all can track their times, generate invoices and more. SaaS version available at https://www.kimai.cloud

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Implements rule for checking if function maybeEmbroider is called in ember-cli-build.js

An ember-cli addon to test against multiple bower and npm dependencies, such as ember and ember-data.

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The emberjs.com website.

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Codemod for ember-test-selectors users to migrate from positional params to named arguments

A tiny addon which implements dev-time assertions in templates

Themes for the reveal.js presentation framework

A list of companies currently using Erlang in production.

Ember computed property based validations

A shared Renovate configuration for Simplabs Open Source repositories.

Composable Ember applications for ambitious user experiences

An Ember.js component to handle international phone numbers

AWS Lambda function for sending emails via the contact form on simplabs.com

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