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Learn how to design large-scale systems. Prep for the system design interview. Includes Anki flashcards.

Python 334,494 54,295 Updated Nov 3, 2025

JavaScript Style Guide

JavaScript 148,098 26,763 Updated Nov 6, 2025

Getting Started with Spring Boot 3:

Java 37,338 53,867 Updated Feb 5, 2026

120+ interactive Python coding interview challenges (algorithms and data structures). Includes Anki flashcards.

Python 31,153 4,628 Updated May 8, 2024

Flexible authentication solution for Rails with Warden.

Ruby 24,335 5,514 Updated Jan 23, 2026

A powerful obfuscator for JavaScript and Node.js

TypeScript 15,836 1,716 Updated Feb 4, 2026

An open source eCommerce platform giving you full control and customizability. Modular and API-first. Multi-vendor, multi-tenant, multi-store, multi-currency & multi-language

Ruby 15,202 5,234 Updated Feb 5, 2026

⏰ 🔥 A TCP proxy to simulate network and system conditions for chaos and resiliency testing

Go 11,818 490 Updated Feb 4, 2026

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

Ruby 11,596 3,187 Updated Feb 6, 2026

The Fullstack Tutorial for GraphQL

TypeScript 8,731 1,139 Updated Jul 3, 2024

⚡ A Scope & Engine based, clean, powerful, customizable and sophisticated paginator for Ruby webapps

Ruby 8,673 1,075 Updated Nov 3, 2025

Canonical actor model implementation for .NET with local + distributed actors in C# and F#.

C# 5,016 1,060 Updated Jan 29, 2026

Getting Started withg Spring Security OAuth:

Java 2,022 1,933 Updated Feb 5, 2026

The Organization for Transformative Works (OTW) - Archive Of Our Own (AO3) Project

Ruby 1,802 671 Updated Feb 3, 2026

Spring Security and Angular:: A tutorial on how to use Spring Security with a single page application with various backend architectures, ranging from a simple single server to an API gateway with …

Java 1,718 1,621 Updated Feb 2, 2026

Uma lista selecionada de conteúdos sobre liderança técnica, com preferência em conteúdos em português

1,636 107 Updated Aug 16, 2024

pg_search builds ActiveRecord named scopes that take advantage of PostgreSQL’s full text search

Ruby 1,536 380 Updated Jan 5, 2026

An analyzer library for C# and VB that uses Roslyn to produce refactorings, code analysis, and other niceties.

C# 1,145 277 Updated Feb 13, 2024

Use Hotwire in your Ruby on Rails app

Ruby 969 26 Updated Dec 20, 2021

Akka.NET professional reference code samples

C# 560 264 Updated Jan 27, 2026

String Instruments Chords Database.

JavaScript 509 120 Updated Oct 14, 2025

Boleto.Net is a library developed for use in Brazil, given it has been programmed with Brazilian retail legislation and business rules for bank registered billing integration.

C# 495 381 Updated Dec 8, 2025

Modal window

JavaScript 486 135 Updated Jun 23, 2017

Online tuner based on web audio api

JavaScript 379 135 Updated Jun 18, 2024

AngularJS directive for the OAuth 2.0 Implicit Flow

JavaScript 362 153 Updated May 6, 2020

Kotlin/Java Client & Server for ISO8583 & Netty

Kotlin 347 152 Updated Feb 5, 2026

A Faraday middleware that respects HTTP cache

Ruby 344 87 Updated Jan 19, 2026

Read, write and manipulate GP3, GP4 and GP5 files.

Python 334 50 Updated Nov 16, 2025

Exploring CQRS, Event Sourcing and DDD with Ruby

Ruby 320 48 Updated Jun 17, 2022

⚡ High performance and low latency Event Sourcing/CQRS framework

Java 299 74 Updated Jun 4, 2019
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