Head-to-Head: Caterpillar vs log4js-node Analysis


v8.2.0(6 months ago)

This package is actively maintained.Types definitions are bundled with the npm packageNumber of direct dependencies: 4Monthly npm downloads

Caterpillar is the ultimate logging system for Deno, Node.js, and Web Browsers. Log levels are implemented to the RFC standard. Log entries can be filtered and piped to various streams, including coloured output to the terminal, the browser's console, and


v6.9.1(over 1 year ago)

This package was last published over a year ago. It may not be actively maintained.Types definitions are bundled with the npm packageNumber of direct dependencies: 5Monthly npm downloads

Log4js is a flexible and feature-rich logging library for Node.js applications, offering various logging levels, appenders, layouts, and configuration options. It provides a simple and intuitive API for logging messages to different outputs like files, consoles, databases, and more. Log4js supports log rolling, log filtering, and log formatting, making it suitable for both small-scale and large-scale projects.


Tags: node.jslogginglog4jlibraryflexible



Log4js is more popular and widely used compared to Caterpillar. It has a larger user base and a more established presence in the JavaScript community.


Both Caterpillar and Log4js are logging libraries for Node.js. They provide similar core features such as logging levels, log formatting, and log output to various destinations. However, Log4js offers a more extensive set of features, including log rolling, log filtering, and support for different appenders and layouts.


Caterpillar uses a simple configuration approach with a single configuration object, making it easy to set up and configure. Log4js, on the other hand, provides a more flexible and configurable approach with support for configuration files, allowing for more advanced logging configurations.


In terms of performance, both libraries are efficient and have minimal impact on application performance. However, Log4js has been optimized for performance and is known to have better performance benchmarks compared to Caterpillar.

Community and Support

Log4js has a larger and more active community compared to Caterpillar. It has a well-documented API, extensive guides, and a larger number of contributors, which results in better community support and faster issue resolution.


Both Caterpillar and Log4js are compatible with Node.js. However, Log4js also provides support for browser-based logging, which can be beneficial if you need to log messages in a client-side JavaScript environment.