Head-to-Head: Caterpillar vs Morgan 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


v1.10.0(over 4 years ago)

This package was last published over a year ago. It may not be actively maintained.Types definitions are provided via a separate npm package: @types/morganNumber of direct dependencies: 5Monthly npm downloads

Morgan is a popular HTTP request logger middleware for Node.js applications. It provides a simple yet powerful way to log incoming HTTP requests, including details like request method, URL, status code, response time, and more. Morgan offers customizable logging formats and supports writing logs to various destinations such as the console, files, or databases.


Tags: node.jsmiddlewarelogginghttprequests



Morgan is a more popular choice among developers and has been widely adopted in the Node.js community. Caterpillar, on the other hand, is less well-known and has a smaller user base.


Both Caterpillar and Morgan are logging libraries for Node.js, but they have different approaches. Morgan focuses on HTTP request logging and provides middleware for Express.js, while Caterpillar is a more general-purpose logging library with support for various log levels, custom transports, and log formatting.


Caterpillar offers more customization options compared to Morgan. It allows you to define custom log levels, transports, and formatters, giving you more control over how your logs are handled. Morgan, on the other hand, provides a simpler and more straightforward API with fewer customization options.


Morgan is specifically designed to work seamlessly with Express.js and is often used as middleware in Express.js applications. Caterpillar, on the other hand, can be integrated into any Node.js application, regardless of the framework being used.


In terms of performance, Morgan is known for its lightweight and efficient implementation. It has been optimized for high-performance logging in HTTP request/response scenarios. Caterpillar also performs well, but its additional customization options may introduce some overhead depending on the configuration.

Community and Maintenance

Both Caterpillar and Morgan have active communities and are actively maintained. Morgan has a larger user base and a more established presence in the Node.js ecosystem, which means it may have better community support and more frequent updates. Caterpillar, while less popular, still receives regular updates and has an active developer community.