PM2 has no web UI. Every open source alternative is dead. So I built one.

Why I started this project PM2 is the most popular process manager for Node.js, with 2 million downloads per week, but it's provided as a CLI tool. If you want to view processes in a browser, manage them, and receive notifications via Slack or email, you need to use PM2 Plus. This is a paid, subscription-based cloud service. All open-source alternatives are built using JS+HTML. They lack modules, type safety, tests, and an architecture designed for extensibility. They are difficult to maintain and develop. You can't simply fork them and add new features without rewriting most of the code. And since they lack tests, you can break anything with your changes. Almost all open-source solutions have been abandoned. The most popular ones, based on star count, haven't been updated in 2 to 10 years. Some have issues that have been open for years, and pull requests aren't accepted. The authors have abandoned these projects. Yet new repositories pop up every few months, but they're still just pla