Carl Mercier Claim this profile

Socialize your app with Likes, Follows and Mentions

Clean & sanitize your ActiveRecord data before saving to database

The ultimate Turbo / Stimulus / Hotwire modal and drawer library for Rails

No Bullshit Password strength checker

A guide to build your own Hackintosh based on Gigabyte Z390 Aorus Master

Automatically wake/sleep and change the input of your LG TV when used as a monitor on macOS

A simple alternative to Chef and Puppet to bootstrap *nix machines.

A simple script to configure Solargraph to work with Rails

Submit changes made to a Git repository into to Perforce

A Ruby interface for the wonderful e-mail newsletter application Sendy

Add cache_key functionality to ActiveRecord scopes

Alfred workflow to add tasks to TickTick

CDN support for Rails asset pipeline made easy

Cache HTML containing CSRF protection tokens without worrying

A set of extra command line tools for Amazon EC2

A beautiful, sane theme for Unraid 6.6+

Import DHCP static mapping from CSV to pfSense

Beast-mode for invoice editing

Automatically reboot your modem and router when your Internet crashes

Rack middleware for verifying and parsing Facebook signed_request param on canvas applications

My Creality Ender 5 config files and notes for Marlin, Cura, Octoprint and others

Dead simple server monitoring

Is it jruby - an application for keeping track of which gems are jruby compatible

A Spree extension to add free-form text variants to products without having to create all the different possibilities in the database

Setup a publicly-accessible VPS proxy to your homelab Mailcow, and use the proxy as an SMTP relay

Demo application for Ultimate Turbo Modal for Rails

Simple Ruby library to interface with Microbilt's IBV API

AdBlock Plus to PiHole whitelist.txt converter

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Self-hosted MCP gateway for coding agents — one place for all your MCP servers, one endpoint per agent, per-agent tool switchboard with OAuth handled for you.

Interactive Brokers to TastyWorks Trade Statement Converter in Ruby

Ruby interface to 'jpegtran' tool.

Database-backed Enum for ActiveRecord

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ActionSMTP is a lightweight SMTP server that forwards incoming emails to Rails Action Mailbox webhooks with built-in spam filtering. It features DNSBL checking, SpamAssassin integration, configurable spam thresholds, webhook authentication, and Docker deployment.

A simple Ruby library to control TP-Link smart plugs

CoinTracking.info to Bitcoin.tax Converter

Script that transfers emails from one server (POP or IMAP) to another (IMAP).

Use Alfred to Switch Between AirPods and Default Audio Sources on macOS

Credit card validation for Parsley.js

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Simple Hotwire cascading form example

Open or install the last file you downloaded

Polo travels through your database and creates sample snapshots so you can work with real world data in development.

A Ruby client for CoinTracking.info

acts_as_formatted is a plugin that provides basic formatting capabilities to all ActiveRecord column objects of type :string or :text, as long as they have content (nil values will remain nil).

Fantastic software I use and love on macOS/OS X

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A backwards-compatible and performant fork of Slim, the template language for Ruby

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A totally unofficial Ruby coding style guide

Auto DMG installer for MacOS

My Homebrew Tap

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Simple MacOS application to remove GateKeeper quarantine flags from .app files

📝A simple and elegant markdown editor, available for Linux, macOS and Windows.

FreeScout — Free self-hosted help desk & shared mailbox (Zendesk / Help Scout alternative)

Powerful MacOS Launcher

A lightweight (~3KB) JavaScript library for creating embeddable widgets that work across origins.

Webhook interceptor and testing tool. Capture and inspect HTTP requests locally with a real-time dashboard. Visualize and test Stripe, GitHub, Shopify, Twilio, SendGrid, and any other webhooks. Zero config.

Decorators/View-Models for Rails Applications

Fast, recursive, optimized, URL-Safe serialization for any Ruby object

Ghostty-based macOS terminal with vertical tabs and notifications for AI coding agents

Track your Clawdbot AI spending in real-time. Stop wondering how much your AI assistant costs. Get instant visibility into your token usage and costs across all models.

Minify your HTML on your Bridgetown site

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Drop-in Rails helper + Stimulus controller for live, dynamic form updates and previews.

🌿 Powerful and seamless HTML-aware ERB parsing and tooling.

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

💫 Toolkit to help you get started with Spec-Driven Development

Project management system for Claude Code using GitHub Issues and Git worktrees for parallel agent execution.

A development framework for Ruby on Rails developers using Claude Code, inspired by SuperClaude

An AI-powered task-management system you can drop into Cursor, Lovable, Windsurf, Roo, and others.

Lucid Private Offices to ICS Calendar

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Preview mail in the browser instead of sending.

Generate static HTML archives of Slack workspaces

General icons extension for Phlex. Includes more than 🎨 14,500 icons.

Simple proper name capitalization that handles edge cases

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Build LLM-powered applications in Ruby

Performance of Rails Engines: ERB vs HAML vs SLIM

Automagically inject flash messages into Ruby on Rails TurboStream responses using Hotwire.

mailcow: dockerized - 🐮 + 🐋 = 💕

A Ruby Gem that adds annotations to your Rails models and route files.

ffmpeg build in docker

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🟥 AppSignal for Ruby gem

Ultra Fast Excel Writer for Ruby

Power-pack for Turbo Streams

A Tailwind CSS datepicker built with vanilla JavaScript

Catch unsafe PostgreSQL migrations in development and run them easier in production (code helpers for table/column renaming, changing column type, adding columns with default, background migrations, etc).

🌊 The ultimate Fish prompt.

Versioned database functions and triggers for Rails

LibreNMS Docker image based on Alpine Linux and Nginx

LibreNMS Agent & Scripts

Quickly get a count estimation for large tables (>99% of accuracy for PostgreSQL).

Unofficial gem for the Bittrex API

A simple Ruby script to convert a CIBC Wood Gundy transaction spreadsheet to CSV importable by ShareSight

Koin is data type to store a cryptocurrency values in Ruby.

Script to retrieve which pairs were traded on Binance exchange

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Monitor and restart unhealthy docker containers.

Make GitHub Copilot CLI's alias work for Fish shell

a docker file to create a streaming server that supports RTMP, HLS and DASH content based on nginx and nginx-rtmp-module.

A collection of useful Stimulus Controllers I wrote

Commands to help you build robust reactive applications with Rails & Hotwire.

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notes for my AI studies, writing, and product brainstorming

Build reactive applications with the Rails tooling you already know and love.

Stimulus autocomplete component

A Gem for creating partial anonymized dumps of your database using your app model relations.

Rack::UTF8Sanitizer is a Rack middleware which cleans up invalid UTF8 characters in request URI and headers.

An open-source & self-hostable Heroku / Netlify alternative.

An example Turbo Native backend to use Jumpstart Pro iOS / Android with existing Ruby on Rails apps

Easy multi-tenancy for Rails in a shared database setup.

Annotate Rails classes with schema and routes info

Interact with Things 3 using Alfred.

Export 1Password item metadata to support 3rd party app integrations using the 1Password CLI

Easy receipts and invoices for your Rails applications

Simple SMTP relay docker image.

Ruby extension to parse, deparse and normalize SQL queries using the PostgreSQL query parser

Alfred 4.0 workflow which shorten the url via bitly

Auto-Updating Docker image based on ubuntu:16.04 running VirtualHere

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A docker image running alpine linux and Jirafeau

List of awesome Alfred workflows I use

Rails 6 + TailwindCSS template

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RSpec Snippets generator for Visual Studio Code

A buildpack vendor that caches and serves assets for buildpacks

Docker image of Gem in a Box.

Ruby on Rails views helpers for the awesome heroicons by Steve Schoger.

Simple script to deduplicate transactions

A supercharged version of paperless: scan, index and archive all your physical documents

Script to convert a Nexo CSV export to Cointracking.info.

Fly through your shell history. Great Scott!

A Rails gem to delegate attributes if they're nil

Ruby gem that properly cases your clients' names

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Simple Base module for implementing consistent Service Objects and Micro-Services in Ruby

An extremely simple program that listens on HTTP port 80 and redirects the request to HTTPS port 443.

iOS styled StartPage

Sendy Docker Image Repository

Tests whether outbound connections to port 25 are allowed by probing the MX record of a random domain name.

Alfred workflow to copy your SSH public key to clipboard

This is a python script to check the expiration dates for the registration of your domains.

Uploads files using Dropshare Mac App

Add and clear focus mode in RSpec files.

Custom web styles for public websites

Alfred Workflow for Pinboard (Rust)

iMessage 2FA Workflow for Alfred

My custom web styles

A simple script to generate an SSL/TLS certificate authority and cert

Middleman extension automating invalidation of CloudFlare, MaxCDN, AWS CloudFront, Fastly and Rackspace CDN caches.

Zero trust system

Just a curl | bash script to install my dotfiles from a private repo

Fill out PDF forms with pdftk (http://www.accesspdf.com/pdftk/).

Alfred Workflow to use Netflix Fast.com Internet Speed Test

A fully configurable and extendable Git hook manager

A very simple startpage to replace new tab in a browser of choice.

Takes an Interactive Brokers Flex Report file and removes transactions prior to a certain date.

if /this/ then /that/ else /taht/

Effilab technical test for Ruby developers

Ruby interface to Interactive Brokers' TWS API

Destination scripts that ship with Dropzone

adds rake inabox:release to bundler gem_tasks to push to your geminabox server

Really simple rubygem hosting

An Alfred 3 workflow for fetching information about cryptocurrency.

Clavier Canadien-Français pour Mac OS X

Oh My Tmux! My pretty + versatile tmux configuration that just works (imho the best tmux configuration)

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Code style checking for GitHub Ruby repositories

A simple gem for eliminating Ruby initializers boilerplate code, and providing unified service obiects API

API Wrapper for the Binance cryptocurrency exchange written in Ruby.

BittrexApi is a wrapper for Bittrex api

Simple, efficient background processing for Ruby

Ruby gem for the Binance API.

These files are used to generate the docker images used by Gitlab CI

Basic Minio image with support for Unraid

Simple, powerful email tracking for Rails

Recurring / Periodic / Scheduled / Cron job extension for Sidekiq

Docker Official Image packaging for Ruby

Garlic.js in love with Rails Asset Pipeline

The gem that tries really hard not to push files to S3.

A Middleman extension that allows you to easily set page titles for your website.

Run a spell checking job through aspell every time you build with middleman.

Bring some useful HP-12C and Excel financial formulas to Ruby ;)

Docker image for Caddy

My Unraid templates for Docker

Wraps the DateJS library for use with the Rails Asset Pipeline

Parsley-Payment bundled for Rails Asset Pipeline

Parsley.js bundled for Rails Asset Pipeline

An attempt at saner Bash defaults

A credit card validator for Parsley.js with Brands validations

Sublime Text plugin for toggling focus on currently selected spec

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An easy to read dark color scheme for Sublime Text.