Node.js

Node.js runs JavaScript code outside the browser on multiple operating systems, enabling server-side and command line applications.

Uses an event loop and non-blocking I/O to handle many concurrent connections efficiently without threading complexities.

Includes native modules for creating HTTP servers, handling streams, and supporting low-latency web applications.

Supports spawning child processes and clustering to utilize multiple CPU cores for load balancing and scalability.

Maintained as open source with official npm package scopes and GitHub organizations for reliable ecosystem components.

Provides modules for file system, crypto, network, debugging, diagnostics, and more for versatile application development.

Automatically enters and exits the event loop based on callbacks, similar to browser JavaScript, simplifying concurrency.

Offers security support for older Node.js versions to maintain application safety over time.