Marc Köhlbrugge

sonner. An opinionated toast component for React.

archspec. Architecture checks for Ruby and Rails.

inkmark. A very fast, feature-packed, AI-first Markdown (CommonMark/GFM) gem for Ruby, based on pulldown-cmark (Rust).

goose. Goose Swift proof-of-concept README

superlevels. A super Chrome extension I made that's safer than installing external malware/spyware-filled extensions that form a massive security risk, this one is open source and you can read and check the source code (with AI) before you install it, and customize it to your liking!

fuik. Rails engine that catches and stores webhooks from any provider

dynamic-views. Obsidian plugin that adds elegant grid and masonry card views for Bases.

crawl4ai. 🚀🤖 Crawl4AI: Open-source LLM Friendly Web Crawler & Scraper. Don't be shy, join here: https://discord.gg/jP8KfhDhyN

openclaw. Your own personal AI assistant. Any OS. Any Platform. The lobster way. 🦞

blazer-ai. AI-powered natural language to SQL generation for Blazer using RubyLLM

playwright_llm. Ruby helper that combines the conversational capabilities of RubyLLM with a Playwright-powered Chromium browser

ruby_llm-semantic_router. Semantic router for RubyLLM-based agents

ruby_llm-instrumentation. Rails instrumentation for RubyLLM

ruby_llm-monitoring. Monitor your LLM usage within your Rails application.

ruby_llm-tribunal. LLM evaluation framework for Ruby, powered by RubyLLM. Tribunal provides tools for evaluating and testing LLM outputs, detecting hallucinations, measuring response quality, and ensuring safety. Perfect for RAG systems, chatbots, and any LLM-powered application.

emoji-picker. React Emoji picker component styled with Tailwind

flowy. The minimal javascript library to create flowcharts ✨

AlertKit. Native alert from Apple Music & Feedback. Contains Done, Heart & Message and other presets.

swiftui-new-metal-shaders. 🔮 SwiftUI 5 Metal Shader Collection + scroll view layouts & effects.

toast-swift. Customizable Swift Toast view built with UIKit. 🍞

Popups. Popups, popovers, sheets, alerts, toasts, banners, (...) presentation made simple. Written with and for SwiftUI.

Glur. A library for progressive blurs in SwiftUI.

open-swiftui-animations. You don't need an animation library to add a simple effect to your SwiftUI app. Create it yourself with SwiftUI. This repo inspires you to add helpful and expressive SwiftUI animations like loading/progress, looping, on-off, enter, exit, fade, spin, and background animations to your next project. The repo also contains tremendous spring animations.

Kingfisher. A lightweight, pure-Swift library for downloading and caching images from the web.

Aranet4MenuBar. macOS menu bar app for monitoring Aranet4 air quality sensor and getting notifications

claude-telegram-bot. TypeScript

37signals-skills. Unofficial agent skills + reference guide that teach AI coding assistants to write Rails the 37signals way — extracted from Fizzy, Campfire, and DHH's code reviews

after_attached. Provides `after_attached` callbacks for Rails models with Active Storage attachments.

sessy. Open-source email observability for AWS SES

wisdom. Merlin Mann attempts to capture the best advice he's heard and learned from.

cloudflare-cli. Unofficial (experimental) CLI for Cloudflare

json_completer. Ruby gem for completing partial JSON strings with stateful incremental parsing. Ideal for streaming JSON processing, handling truncated data, and incomplete API responses

opentelemetry-rails-example. Ruby

ruby_llm-template. Organize prompts into reusable templates for RubyLLM

system-prompts-and-models-of-ai-tools. FULL Augment Code, Claude Code, Cluely, CodeBuddy, Comet, Cursor, Devin AI, Junie, Kiro, Leap.new, Lovable, Manus, NotionAI, Orchids.app, Perplexity, Poke, Qoder, Replit, Same.dev, Trae, Traycer AI, VSCode Agent, Warp.dev, Windsurf, Xcode, Z.ai Code, Dia & v0. (And other Open Sourced) System Prompts, Internal Tools & AI Models

stepper_motor. Effortless step workflows for Rails

refs-rails. Tame your wild DOM string IDs.

reactionview. 🌱 A new ActionView-compatible ERB engine with modern DX - re-imagined with Herb.

storymachine. Automate user story creation, in a format suitable for AI agents.

smartbear-mcp. SmartBear's official MCP Server

gpustack. A GPU cluster manager for high-performance AI model serving (vLLM, SGLang) and on-demand SSH-accessible GPU instances.

wreq-python. An ergonomic, censorship-resistant Python HTTP Client

retriable. Retriable is an simple DSL to retry failed code blocks with randomized exponential backoff.

ruby_llm-schema. A simple and clean Ruby DSL for creating JSON schemas.

ruby_llm-mcp. Full-featured MCP support for Ruby and RubyLLM—making it easy to build structured, composable LLM workflows in pure Ruby.

Foundation-Models-Framework-Lab. A practical lab for building, testing, and evaluating apps with Apple's Foundation Models framework.

TwitterClone. Twitter Clone made with SwiftUI

AppReview. ⭐️ A tiny library for iOS and macOS to request reviews on the App Store. This is a wrapper around the native SKStoreReviewController.

Alamofire. Elegant HTTP Networking in Swift

Popovers. A library to present popovers. Simple, modern, and highly customizable. Not boring!

Defaults. 💾 Swifty and modern UserDefaults

Nuke. Image loading system

ruby_llm. One delightful Ruby framework for every major AI provider. Build AI agents, chatbots, RAG apps, and multimodal workflows in beautiful, expressive code.

acts_as_recursive_tree. Make use of recursive queries in Rails when using Postgresql or SQLite

openapi3_parser. Open API 3 Parser/Validator for Ruby

email_address. The EmailAddress Gem to work with and validate email addresses.

pg_auto_embeddings. Text embeddings calculation for Postgres, without extensions. Simple, atomic, supports OpenAI/Anthropic models. Does not require any additional extensions, making it suitable for managed databases and other restricted environments.

hotwire-dev-tools. Browser Dev Tools for Turbo and Stimulus

frozen_record. Read only ActiveRecord-like interface to query static YAML files

rubyevents. On a mission to index all Ruby events.

action_controller-stashed_redirects. Stash a redirect to execute a controller flow within another and return to the original flow later.

current.js. A tiny 🤏 library (only 410 B) that allows you to access current `<meta>` elements

turbo-lsp. Intelligent Turbo tooling

atproto-ruby. An atproto client for authenticated requests, in ruby.

llm. Access large language models from the command-line

cog-comfyui-xlabs-flux-controlnet. Run controlnet with flux

photo-similarity-search. Super simple MLX (apple silicon) CLIP based photo similarity web app

heroicons. Ruby on Rails view helpers for the beautiful hand-crafted SVG icons, Heroicons.

ga4-standard-data-layer.

revise_auth. A pure Rails authentication system like Devise.

ib-api. Lightweight Ruby interface to Interactive Brokers' TWS API

refer. Referral codes for Ruby on Rails applications

pluck_in_batches. A faster alternative to the custom use of `in_batches` with `pluck`

prefixed_ids. Friendly Prefixed IDs for your Ruby on Rails models

puppeteer-ruby. A Ruby port of Puppeteer

stimulus-components. Over 25 Stimulus controllers with built-in behavior, top-tier documentation, designed for easy extension, and ready for your styles to solve every day frontend problems.

Ollamac. Mac app for Ollama

hostedgpt. An open version of ChatGPT you can host anywhere or run locally.

OpenRooms. This is the dataset and code release of the OpenRooms Dataset. For more information, please refer to our webpage below. Thanks a lot for your interest in our research!

neural_scene_decoration. Code release for ECCV 2022 paper "Neural Scene Decoration from a Single Photograph"

architectural_style_transfer. Code and data release for ICCP 2022 paper "Time-of-Day Neural Style Transfer for Architectural Photographs".

ST-RoomNet. Official code for ST-RoomNet

InverseRenderingOfIndoorScene. Python

VirtualObjectInsertion. Python

mmsegmentation. OpenMMLab Semantic Segmentation Toolbox and Benchmark.

active_record-associated_object. Extract Collaborator Objects from your Active Records, a new concept called Associated Objects

active_job-performs. ActiveJob::Performs adds the `performs` macro to set up jobs by convention.

mission_control-servers. Monitor for Ruby on Rails applications' server resources

OutfitAnyone. Outfit Anyone: Ultra-high quality virtual try-on for Any Clothing and Any Person

AnimateAnyone. Animate Anyone: Consistent and Controllable Image-to-Video Synthesis for Character Animation

dreamoving-project. Official implementation of DreaMoving

node-html-to-text. Advanced html to text converter

fakefilter. reliable fake and temp email filter solution for site operators

fingerprintjs. The most advanced free and open-source browser fingerprinting library

truemail. 🚀 Configurable framework agnostic plain Ruby 📨 email validator/verifier. Verify email via Regex, DNS, SMTP and even more. Be sure that email address valid and exists.

facechain. FaceChain is a deep-learning toolchain for generating your Digital-Twin.

database_consistency. The tool to avoid various issues due to inconsistencies and inefficiencies between a database schema and application models.

logidze. Database changes log for Rails

pg_trunk. Empower PostgreSQL migrations in Rails app

fast-stable-diffusion. fast-stable-diffusion + DreamBooth

compel. A prompting enhancement library for transformers-type text embedding systems

controlnet_aux. Python

x-ruby. A Ruby interface to the X API.

audiowaveform. C++ program to generate waveform data and render waveform images from audio files

authentication-zero. An authentication system generator for Rails applications.

oj. Optimized JSON

memoist. ActiveSupport::Memoizable with a few enhancements

slowpoke. Rack::Timeout enhancements for Rails

safely. Rescue and report exceptions in non-critical code

production_rails. Best practices for running Rails in production

cog-sd-txt2imghd. Stable-diffusion with Real-ESRGAN for upsampling

magma-chat. Ruby on Rails 7-based ChatGPT Bot Platform

tiktoken_ruby. Unofficial ruby binding for tiktoken by way of rust

boxcars. Building applications with composability using Boxcars with LLM's.

replicate-ruby. Replicate Ruby client

inpainter. A web GUI built with Next.js for inpainting with AI models using Replicate's API

dreambooth-action. Train your own custom DreamBooth text-to-image model using a GitHub Actions workflow

whisper.cpp. Port of OpenAI's Whisper model in C/C++

puppeteer-screen-recorder. A powerful plugin for recording with Puppeteer.

stable-ts. Transcription, forced alignment, and audio indexing with OpenAI's Whisper

podcasts_badges. Podcasts badges created in the style of the Apple Podcasts one, for all the services and clients I could come up. Both in English and Spanish. Free to use.

turbo_power. Custom Actions power-pack for Turbo Streams

AstroNvim. AstroNvim is an aesthetic and feature-rich neovim config that is extensible and easy to use with a great set of plugins

caffeinate. A Rails engine for drip campaigns/scheduled sequences and periodical support. Works with ActionMailer, and other things.

ChatGPT.nvim. ChatGPT Neovim Plugin: Effortless Natural Language Generation with OpenAI's ChatGPT API

postgresql_cursor. ActiveRecord PostgreSQL Adapter extension for using a cursor to return a large result set

Docker-OSX. Run macOS VM in a Docker! Run near native OSX-KVM in Docker! X11 Forwarding! CI/CD for OS X Security Research! Docker mac Containers.

web-push. Web Push library for Ruby (RFC8030) - A fork of zaru/webpush actively maintained by Pushpad with many improvements, bug fixes and updates.

pg-toolkit. Dockerfile

stimulus-autocomplete. Stimulus autocomplete component

hotwire-livereload. Live reload gem for Hotwire Rails apps.

tweetkit. ⚠️ WIP: Twitter v2 API client for Ruby

active_storage_validations. Do it like => validates :photos, attached: true, content_type: ['image/png', 'image/jpg', 'image/jpeg'], size: { less_than: 500.kilobytes }, limit: { min: 1, max: 3 }, aspect_ratio: :landscape, dimension: { width: { in: 800..1600 }

nopassword. Login via email, SMS, or whatever would use a temporary code

stable-diffusion.

heroicon. Ruby on Rails view helpers for the beautiful hand-crafted SVG icons, Heroicons.

ActiveRecordExtended. Adds additional postgres functionality to an ActiveRecord / Rails application

acidic_job. 🧪 Durable execution workflows for Active Job

render_api. Ruby interface for the render.com API.

shale. Shale is a Ruby object mapper and serializer for JSON, YAML, TOML, CSV and XML. It allows you to parse JSON, YAML, TOML, CSV and XML data and convert it into Ruby data structures, as well as serialize data structures into JSON, YAML, TOML, CSV or XML.

sniffer. Log and Analyze Outgoing HTTP Requests

eth.rb. a straightforward library to build, sign, and broadcast ethereum transactions anywhere you can run ruby.

contracts. General purpose contracts for Ethereum

tailwindcss-fluid-type. A plugin that makes the use of Fluid Type a breeze.

maintenance_tasks. A Rails engine for queueing and managing data migrations.

hashid-rails. Use Hashids (http://hashids.org/ruby/) in your Rails app ActiveRecord models.

hardhat-boilerplate. JavaScript

unsubscribe. Automatically unsubscribe from emails in Rails.

outliertree-ruby. Explainable outlier/anomaly detection for Ruby

tailwind-scrollbar-hide. tailwindcss plugin for hide scrollbar

tailwindcss-stimulus-components. A set of StimulusJS components for TailwindCSS apps similar to Bootstrap JS components.

SwiftBar. Powerful macOS menu bar customization tool

chatterbot. A straightforward ruby-based Twitter Bot Framework, using OAuth to authenticate.

SourceCodeSyntaxHighlight. Quick Look extension for highlight source code files on macOS 10.15 and later.

git_curate. ✂️ Peruse and delete git branches ergonomically

ferrum. Headless Chrome Ruby API

vessel. Fast high-level web crawling Ruby framework

parallel_tests. Ruby: 2 CPUs = 2x Testing Speed for RSpec, Test::Unit and Cucumber

ruby_ethereum_example. Example rails application using ethereum.rb

ethereum.rb. Ethereum library for the Ruby language

stimulus-rails. Use Stimulus in your Ruby on Rails app

homebrew-marmaduke-chromium. Homebrew Tap for Marmaduke Chromium builds

wip-cli. A simple gem to manage wip.co todos from the command line.

greplace.vim. Global search and replace for VI

tcomment_vim. An extensible & universal comment vim-plugin that also handles embedded filetypes

dotfiles. config files for zsh, bash, completions, gem, git, irb, rails, vim

vim-surround. surround.vim: Delete/change/add parentheses/quotes/XML-tags/much more with ease

yt-dlc. media downloader and library for various sites.

helppo. Instant admin UI for your database

magic-link. Ruby

turbolinks-prefetch. Turbolinks extends for prefetch links to speeds up your website.

passwordless. 🗝 Authentication for your Rails app without the icky-ness of passwords

stripe-rails. A Rails Engine for integrating with Stripe

Learn-Vim. Learning Vim and Vimscript doesn't have to be hard. This is the guide that you're looking for 📖

stimulus-use. A collection of composable behaviors for your Stimulus Controllers.

spidr. A versatile Ruby web spidering library that can spider a site, multiple domains, certain links or infinitely. Spidr is designed to be fast and easy to use.

boilerpipe-ruby. Pure ruby implementation of the Boilerpipe content extraction algorithm tuned for online articles

airrecord. Ruby wrapper for Airtable, your personal database

zsh-autosuggestions. Fish-like autosuggestions for zsh

debugger-action. Interactive debug session for GitHub Actions

fake_stripe. A Stripe fake so that you can avoid hitting Stripe servers in tests.

disco. Recommendations for Ruby and Rails using collaborative filtering

refactoring_ruby. Reading Refactoring Ruby Edition, typing the code, writing the tests, committing small refactoring steps

hnrss. Custom, realtime RSS feeds for Hacker News

BespokeApp. BespokeApp is a simple open source iOS app that lets you group together realted websites that you frequently visit.

kimuraframework. Write web scrapers in Ruby using a clean, AI-assisted DSL. Kimurai uses AI to figure out where the data lives, then caches the selectors and scrapes with pure Ruby. Get the intelligence of an LLM without the per-request latency or token costs.

friendly-words. The Glitch word list, packaged into an NPM module for easy use.

gitdocs. Easy to use, SEO-friendly, beautiful documentation that lives in your git repo.

danbooru. A taggable image board written in Rails.

human-essentials. Human Essentials is an inventory management system for diaper, incontinence, and period-supply banks. It supports them in distributing to partners, tracking inventory, and reporting stats and analytics.

gitlabhq. GitLab CE Mirror | Please open new issues in our issue tracker on GitLab.com

mastodon. Your self-hosted, globally interconnected microblogging community

openproject. OpenProject is the leading open source project management software.

rubygems.org. The Ruby community's gem hosting service.

splits-io. a speedrunning data store and analysis engine

vglist. A video game library tracking web app built in Rails and powered by Wikidata.

tracks. Tracks is a GTD™ web application, built with Ruby on Rails

calagator. An open source community calendar platform written in Ruby on Rails

catarse. The first open source crowdfunding platform for creative projects in the world

forem. For empowering community 🌱