Todd Lynam

pi-autoresearch. Autonomous experiment loop extension for pi

once. Easy self-hosting for Docker-based web apps

cool-retro-term. A good looking terminal emulator which mimics the old cathode display...

sidekiq-memory_logger. Memory logging for Sidekiq jobs

gvl_metrics_middleware. Ruby

perfm. Perfm aims to be a performance monitoring tool for Ruby on Rails applications. Currently, it has support for GVL instrumentation and provides analytics to help optimize Puma thread concurrency settings based on the collected GVL data.

AeroSpace. AeroSpace is an i3-like tiling window manager for macOS

desiru. DeSIRu (Declarative Self-Improving Ruby)

claude-on-rails. A development framework for Ruby on Rails developers using Claude Code, inspired by SuperClaude

itsi. Itsi – the teensy‑weensy Ruby Rack server, static asset server, reverse proxy, API gateway, and fiber scheduler!

llm. cruby's capable AI runtime

dexter. The automatic indexer for Postgres

pg_scripts. PostgreSQL queries and scripts

activerecord-dsql-adapter. Active Record Adapter for AWS Aurora DSQL

stts. A simple macOS app for monitoring the status of cloud services

actual_db_schema. Keep DB schema in sync across branches effortlessly. Install and use rails db:migrate as normal. The gem handles the rest automatically.

pg_flame. A flamegraph generator for Postgres EXPLAIN ANALYZE output.

hoardable. ActiveRecord versioning and soft-deletion with Postgres using uni-temporal inherited tables

debugbar. Powerful devtools for Ruby on Rails. Inspired by the Laravel Debugbar.

active_record_doctor. Identify database issues before they hit production.

37signals-rails-code. Ruby

pgx_scripts. A collection of useful little scripts for database analysis and administration, created by our team at PostgreSQL Experts.

rubrowser. a ruby code dependency graph interactive visualizer

goldiloader. Just the right amount of Rails eager loading

solid_cache. A database-backed ActiveSupport::Cache::Store

events. [Experimental] Events framework for Hanami

monitor_outdated_gems. Get a notification in the console if gems that you specify are out of date

automatic_namespaces. Modify Rails autoloading rules to treat all files in a package directory as belonging to a given namespace

ar2dto. Convert ActiveRecord objects to DTOs

rails_event_store. A Ruby implementation of an Event Store based on Active Record

surrounded. Create encapsulated systems of objects and focus on their interactions

diabloweb. Diablo 1 for web browsers

unused. A tool to identify potentially unused code.

rubycritic. A Ruby code quality reporter

ruby-vips. Ruby extension for the libvips image processing library.

jit_preloader. Frees your Rails app from N+1 queries.

Replibyte. Seed your development database with real data ⚡️

role_model. RoleModel is the framework agnostic, efficient and declarative way to do user roles.

que. A Ruby job queue that uses PostgreSQL's advisory locks for speed and reliability.

database-lab-engine. DBLab enables 🖖 database branching and ⚡️ thin cloning for any Postgres database and empowers DB testing in CI/CD. This optimizes database-related costs while improving time-to-market and software quality. Follow to stay updated.

adornable. Use decorators on Ruby methods!

request_store. Per-request global storage for Rack.

rails-mini-profiler. Performance profiling for Rails, made simple 🦔

wal-e. Continuous Archiving for Postgres

faker. A library for generating fake data such as names, addresses, and phone numbers.

falcon. A high-performance web server for Ruby, supporting HTTP/1, HTTP/2 and TLS.

pgslice. Postgres partitioning as easy as pie

pg_partman. Partition management extension for PostgreSQL

suture. 🏥 A Ruby gem that helps you refactor your legacy code

mutant. Mutation testing for Ruby. AI writes your code. AI writes your tests. But who tests the tests?

rails-footnotes. Every Rails page has footnotes that gives information about your application and links back to your editor

activerecord-analyze. Add EXPLAIN ANALYZE to Rails Active Record query objects

statesman. A statesmanlike state machine library.

fastimage. FastImage finds the size or type of an image given its uri by fetching as little as needed

memo_wise. The wise choice for Ruby memoization

fisk. A pure Ruby assembler

rhizome. A JIT for Ruby, implemented in pure Ruby

committee. A collection of Rack middleware to support JSON Schema.

engineering-blogs. A curated list of engineering blogs

find. A find-in-page extension for Chrome and Firefox that supports regular expressions.

activerecord-pg_enum. Integrate PostgreSQL's enumerated types with the Rails enum feature

object_tracer. ObjectTracer tracks objects and records their activities

httplog. Log outgoing HTTP requests in ruby

spring-commands-m. This gem implements the m command for Spring.

listen. The Listen gem listens to file modifications and notifies you about the changes.

spring-watcher-listen. Ruby

spring. Rails application preloader

bogus. Fake library for Ruby

jsonb_accessor. Adds typed jsonb backed fields to your ActiveRecord models.

mini_sql. a minimal, fast, safe sql executor

sql.js-httpvfs. Hosting read-only SQLite databases on static file hosters like Github Pages

realtime. Broadcast, Presence, and Postgres Changes via WebSockets

puma. A Ruby/Rack web server built for parallelism

lograge. An attempt to tame Rails' default policy to log everything.

REST-assured. Real stubs and spies for HTTP(S) services

standard. Ruby's bikeshed-proof linter and formatter 🚲

pg-anonymizer. Dump anonymized PostgreSQL database with a NodeJS CLI

vscode-solargraph. A Visual Studio Code extension for Solargraph.

rack-brotli. Brotli compression for Rack responses

ruby-next. Ruby Next makes modern Ruby code run in older versions and alternative implementations

lamby. 🐑🛤 Simple Rails & AWS Lambda Integration

impressionist. Rails Plugin that tracks impressions and page views

speedscope. 🔬 A fast, interactive web-based viewer for performance profiles.

informers. Fast transformer inference for Ruby

sqlbench. sqlbench measures and compares the execution time of one or more SQL queries.

query_diet. A Rails database query counter that stays out of your way

pg_column_byte_packer. Auto-order table columns for optimize disk space usage

heroku-buildpack-datadog. Heroku Buildpack to run the Datadog Agent in a Dyno

dd-trace-rb. Datadog's client library for Ruby

heroku-deflater. Enable gzip compression on heroku, but don't compress images.

awesome-rack. A curated list of awesome Ruby rack, middlewares, frameworks and web servers

rack-slow-log. Slow request logger for rack applications.

minitest-reporters. :page_with_curl: Create customizable MiniTest output formats.

faulty. Fault-tolerance tools for ruby based on circuit-breakers

ruby_jard. Just Another Ruby Debugger. Provide a rich Terminal UI that visualizes everything your need, navigates your program with pleasure, stops at matter places only, reduces manual and mental efforts. You can now focus on real debugging.

markov_chains. A Ruby gem to generate random text from a source text using Markov Chains

corpora. A collection of small corpuses of interesting data for the creation of bots and similar stuff.

fucking-algorithm. Crack LeetCode, not only how, but also why.

idiosyncratic-ruby.com. Documenting All Ruby Specialities 💎︎

gem_updater. Update gems in your Gemfile and fetch their changelogs

childprocess. Cross-platform Ruby library for managing child processes.

puma-newrelic. Puma stats sampler for New Relic

graphql-rails-generators. Graphql Rails Scaffold™. Automatically generate GraphQL types from your rails models.

pgrel. ActiveRecord extension for querying hstore and jsonb

readygo. A Ruby benchmarking tool accurate to sub-nanosecond time scales

1on1-questions. Mega list of 1 on 1 meeting questions compiled from a variety to sources

amazing_print. Pretty print your Ruby objects with style -- in full color and with proper indentation

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

pgsync. Sync data from one Postgres database to another

benchmark-ips. Provides iteration per second benchmarking for Ruby

fast-ruby. :dash: Writing Fast Ruby :heart_eyes: -- Collect Common Ruby idioms.

graphql-ruby. Ruby implementation of GraphQL

rails-pg-extras. Rails PostgreSQL database performance insights. Locks, index usage, buffer cache hit ratios, vacuum stats and more.

heroku-pg-extras. A heroku plugin for awesome pg:* commands that are also great and fun and super.

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

OctoLinker. OctoLinker — Links together, what belongs together

brakeman. A static analysis security vulnerability scanner for Ruby on Rails applications

activeinteractor. An implementation of the command pattern for Ruby with ActiveModel::Validations inspired by the interactor gem. Rich support for attributes, callbacks, and validations, and thread safe performance methods.

combustion. Simple, elegant testing for Rails Engines

power_assert. Power Assert for Ruby

rubyreferences.github.io. Simple index page for other references.

powerlevel10k. A Zsh theme

agnoster-zsh-theme. A ZSH theme designed to disclose information contextually, with a powerline aesthetic

ohmyzsh. 🙃 A delightful community-driven (with 2,500+ contributors) framework for managing your zsh configuration. Includes 300+ optional plugins (rails, git, macOS, hub, docker, homebrew, node, php, python, etc), 140+ themes to spice up your morning, and an auto-update tool that makes it easy to keep up with the latest updates from the community.

reactotron. A desktop app for inspecting your React JS and React Native projects. macOS, Linux, and Windows.

react-native-webrtc. The WebRTC module for React Native

artichoke. 💎 Artichoke is a Ruby made with Rust

rbtris. Tetris game powered by Ruby2D

amb. Ambiguous function/operator implementation in Ruby

bootboot. Dualboot your Ruby app made easy

ruby-pg. A PostgreSQL client library for Ruby

pg_partition_manager. Manage PostgreSQL table partitions

geared_pagination. Paginate Active Record sets at variable speeds

Tennis-Refactoring-Kata. This is a Refactoring Kata based on the rules of Tennis

prep-test. Sample questions for Ruby Association Certified Ruby Programmer Examination

rbnacl. Ruby FFI binding to the Networking and Cryptography (NaCl) library (a.k.a. libsodium)

rein. Database constraints made easy for ActiveRecord.

javascript-testing-best-practices. 📗🌐 🚢 Comprehensive and exhaustive JavaScript & Node.js testing best practices (August 2025)

sport.db. sport.db - open sports database (e.g. football.db, formula1.db etc.) command line tool and libraries

aqo. Adaptive query optimization for PostgreSQL

pspg. Unix pager (with very rich functionality) designed for work with tables. Designed for PostgreSQL, but MySQL is supported too. Works well with pgcli too. Can be used as CSV or TSV viewer too. It supports searching, selecting rows, columns, or block and export selected area to clipboard.

webdrivers. Keep your Selenium WebDrivers updated automatically

rack-mini-profiler. Profiler for your development and production Ruby rack apps.

eximap. WIP: An IMAP client written in Elixir

impersonator. Ruby library to record and replay object interactions

rubyfmt. Ruby Autoformatter!

TypeScript. TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

react. Cheatsheets for experienced React developers getting started with TypeScript

rbspy. Sampling CPU profiler for Ruby

cuprite. Headless Chrome/Chromium driver for Capybara

dokku. A docker-powered PaaS that helps you build and manage the lifecycle of applications

react-redux-links. Curated tutorial and resource links I've collected on React, Redux, ES6, and more

pizza-dough. This recipe is dedicated to helping you make the best possible pizza dough for Neapolitan pizza.

phoenix-chat-example. 💬 The Step-by-Step Beginners Tutorial for Building, Testing & Deploying a Chat app in Phoenix 🚀

react-developer-roadmap. Roadmap to becoming a React developer

rrweb. record and replay the web

react-beautiful-chat. 💄A simple and beautiful React chat component backend agnostic and with Emoji and File support.

react-chat-elements. Reactjs chat elements chat UI, react chat components

react-native-gifted-chat. 💬 The most complete chat UI for React Native

Unshaky. A software attempt to address the "double key press" issue on Apple's butterfly keyboard [not actively maintained]

scientist. :microscope: A Ruby library for carefully refactoring critical paths.

33-js-concepts. 📜 33 JavaScript concepts every developer should know.

fasterer. :zap: Don't make your Rubies go fast. Make them go fasterer ™. :zap:

walt. :zap: Walt is a JavaScript-like syntax for WebAssembly text format :zap:

react-navigation. Routing and navigation for React Native and Web apps

react-native-router-flux. The first declarative React Native router

react-native-navigation. A complete native navigation solution for React Native

react-native-sqlite-storage. Full featured SQLite3 Native Plugin for React Native (Android and iOS)

the-ultimate-guide-to-ruby-timeouts. Timeouts for popular Ruby gems

name_of_person. Presenting names of people in full, familiar, abbreviated, and initialized forms (but without titulation etc)

torque-postgresql. Add support to complex resources of PostgreSQL, like data types, array associations, auxiliary statements (CTE), and full-text search (FTS)

paraspec. Parallel RSpec test runner

tty-box. Draw various frames and boxes in your terminal window

soa. Helps you migrate from monolithic Ruby to services

parallel. Ruby: parallel processing made simple and fast

benchmark-bigo. Provides Big O notation benchmarking for Ruby

pgbouncerhero. A dashboard for your PgBouncers.

facenet. Face recognition using Tensorflow

turbo_urls. Ruby

async_partial. Ruby

string_template. A template engine for Rails, focusing on speed, using Ruby's String interpolation syntax

future_records. Ruby

react_on_rails. Integration of React + Webpack + Rails including server-side rendering of React, enabling a better developer experience and faster client performance.

devise_token_auth. Token based authentication for Rails JSON APIs. Designed to work with jToker and ng-token-auth.

allocator_bench. bench of various memory allocators

rails_ruby_bench. A Rails-based benchmark for Ruby development

heroku-buildpack-jemalloc. Heroku buildpack with jemalloc

coverband. Ruby production code coverage collection and reporting (line of code usage)

ripgrep. ripgrep recursively searches directories for a regex pattern while respecting your gitignore

siege. Siege is an http load tester and benchmarking utility

bootsnap. Boot large Ruby/Rails apps faster

scenic. Versioned database views for Rails

paper_trail. Track changes to your rails models

table_print. The best data slicer! Watch a 3 minute screencast at http://tableprintgem.com

lurn. A ruby gem for elegant data science and machine learning

launchrocket. A Mac PrefPane to manage all your Homebrew-installed services

lol_dba. lol_dba is a small package of rake tasks that scan your application models and displays a list of columns that probably should be indexed. Also, it can generate .sql migration scripts.

upsert. Upsert on MySQL, PostgreSQL, and SQLite3. Transparently creates functions (UDF) for MySQL and PostgreSQL; on SQLite3, uses INSERT OR IGNORE.

did_you_mean. The gem that has been saving people from typos since 2014

get_schwifty. Render portions of your Rails view in a background job queue. ActiveJob + ActionCable.