eternity4719/HowToLiveBetter

Millennium Dawn is a large-scale fan-made expansion for the popular strategy game Hearts of Iron IV, transforming it from a World War II setting into a modern geopolitical simulation starting in the year 2000. Built by a community of 347 contributors, it adds entirely new political systems, economic mechanics, and story content covering over 150 countries — essentially creating a new game within an existing game.

why it matters: With 347 contributors, 122 stars, and 84 forks, this project is a strong example of how passionate communities can build and sustain complex creative products entirely through open-source collaboration — a model increasingly relevant for indie game studios and community-led content businesses. For builders, it illustrates how a modding ecosystem can extend the commercial life and reach of a core product, a strategy major gaming companies and platform owners are actively investing in.

LibreOffice is a free, open-source alternative to Microsoft Office, offering word processing, spreadsheets, presentations, and more — used by millions of people and organizations worldwide. This repository contains the core source code that powers the entire suite, maintained by nearly 3,000 contributors.

why it matters: For builders and organizations, LibreOffice represents a proven, enterprise-grade productivity platform that can be embedded, extended, or self-hosted without licensing costs — a strategic alternative to paying for Microsoft 365 at scale. Its massive contributor base and long track record also make it a compelling foundation for document-centric product features, from file conversion tools to collaborative editing solutions.

WebKit is the core engine that powers how web pages are displayed and run inside Apple's Safari browser, as well as Mail, Apple Books, and many other apps on iPhone, Mac, and Linux. Think of it as the invisible machinery that reads website code and turns it into the visual, interactive pages that billions of people see every day.

why it matters: Any app or service that renders web content on Apple devices is ultimately dependent on WebKit, making it one of the most strategically important open-source projects for anyone building on iOS or macOS. Understanding WebKit's direction — what web standards it supports and when — directly affects what features product teams can ship to Apple's massive global user base.

Jellyfin Web is the official browser-based interface for Jellyfin, a free, self-hosted media server that lets people stream their own movies, TV shows, and music — similar to Netflix or Plex, but without any subscription fees or corporate ownership. It powers the user-facing experience across web browsers, Android, and iOS apps, making it the primary way most users interact with their personal media libraries.

why it matters: With over 3,400 stars and nearly 2,800 contributors, Jellyfin represents a rapidly growing open-source alternative to paid streaming infrastructure, signaling strong consumer demand for privacy-first, self-hosted media solutions. For builders, it offers a proven, freely reusable foundation for any product involving media streaming, content delivery, or subscription-free entertainment platforms.