Sysdig tracer support for Node.js
Attempts to create stack traces for unhandled JavaScript exceptions in all major browsers.
strace equivalent for Node.js – Still somewhat in progress!
Tutorial for web scraping / crawling with Node.js.
D3 circle chart
Web UI for Jaeger
spy-js: javascript tracing tool
A Real-Time PostgreSQL Monitoring, Analysis, and Visualization Developer Tool
Much better tracing of unhandled promise rejections in JavaScript
D3 dot chart
A command line tool for following and showing HTTP redirects for a given URL
Generate, parse, and enhance JavaScript stack traces in all web browsers