Language and Runtime

What language and runtime each logging library targets.

Winston

JavaScript/TypeScript, running on Node.js.

JavaScript/TypeScript, running on Node.js, the default logger for the Fastify framework.

Python, part of the standard library itself, requiring no external dependency.

Python, a third-party library designed as a drop-in improvement over the standard library’s logging module.

Java (and other JVM languages), widely used directly and as a backend implementation for the SLF4J facade.

Java (and other JVM languages), designed from the start as SLF4J’s native implementation.

Go, a standalone third-party library.

Go, part of the standard library since Go 1.21, requiring no external dependency for basic use.

Rust, a standalone crate widely used alongside async runtimes like Tokio.

C#/.NET, a standalone third-party library.

PHP, a standalone library implementing the PSR-3 standard logging interface used across the PHP ecosystem.