Top 85 logging-library open source projects

An modern and pluggable logging framework for Delphi

🌲 Great Elixir logging made easy

A modern, fluent and conventions based HMVC framework for ColdFusion (CFML)

FirePHP server library for sending PHP variables to the browser.

Ring-Log是一个高效简洁的C++异步日志， 其特点是效率高（每秒支持至少125万+日志写入）、易拓展，尤其适用于频繁写日志的场景

Microsoft Extension Logging implementation for Blazor

Python logging library to emit JSON log that can be easily indexed and searchable by logging infrastructure such as ELK, EFK, AWS Cloudwatch, GCP Stackdriver

cscore is a minimal-footprint library providing commonly used helpers & patterns for your C# projects. It can be used in both pure C# and Unity projects.

Nanolog is an extremely performant nanosecond scale logging system for C++ that exposes a simple printf-like API.

A library for logging HTTP request/response for Spring Boot application and integration with Elastic Stack

Application level tracing for Rust.

An elegant console reporter, borrowed from Yarn

📑 Zero-dependency, fast logging library for both Node and Browser.

Most natural Swift logging

Salesforce open source library with logging framework, trigger framework, feature switches, and advanced monitoring capabilities

An OkHttp interceptor which has pretty logger for request and response. +Mock support

Logging framework for Haskell

Simple rolling file logger for Qt.

Structured, contextual, extensible, composable logging for Rust

log4cplus is a simple to use C++ logging API providing thread-safe, flexible, and arbitrarily granular control over log management and configuration. It is modelled after the Java log4j API.

Generates access logs compatible with Apache httpd (enhanced combined format)

Eliot: the logging system that tells you *why* it happened

Trail is a simple logging system for Java and Android. Create logs using the same API and the library will detect automatically in which platform the code is running.

📄The reliable, generic, fast and flexible logging framework for Android

Pretty Slack log target for Yii 2

Telegram log target for Yii 2

MEX Vocabulary: a lightweight machine learning interchange format

Logging library to provide more convenient, extremely configurable but simple monadic interface with pretty output

Bring console.log on the screen

NLog - Advanced and Structured Logging for Various .NET Platforms

Simple, efficient logging for Rust

Ruby logger that writes logstash events

Productivity-oriented collection of lightweight fancy stuff for Scala toolchain

Asynchronous Low Latency C++ Logging Library

Share Hash Tables With Stable Key Hints Stored In Memory Mapped Files Between Arbitrary Processes

A debug log framework for use in Swift projects. Allows you to log details to the console (and optionally a file), just like you would have with NSLog() or print(), but with additional information, such as the date, function name, filename and line number.

iOS Debugging Tool 🚀

tinylog is a lightweight logging framework for Java, Kotlin, Scala, and Android

Exceptionless clients for the .NET platform

Trojan is an efficient mobile terminal lightweight log SDK

Reckless logging. Low-latency, high-throughput, asynchronous logging library for C++.

Pretty logger for Electron apps

📝 tslog - Expressive TypeScript Logger for Node.js.

NLog Provider for Microsoft.Extensions.Logging for .NET Standard libraries and .NET Core applications

Python library to easily setup basic logging functionality

The fastest logging library in the world. Built from scratch in Scala and programmatically configurable.

Log4Qt - Logging for the Qt cross-platform application framework

Single header C++ logging library. It is extremely powerful, extendable, light-weight, fast performing, thread and type safe and consists of many built-in features. It provides ability to write logs in your own customized format. It also provide support for logging your classes, third-party libraries, STL and third-party containers etc.

An all-in-one JSON logging utility that supports ExpressJS HTTP logging, custom logging, provides multi-format output and an easy to use events API.

Simple logger for Go programs. Allows custom formats for messages.

A Telegram transport for winston

A simple logging facade for Object Pascal (Delphi and FPC)

📝 Customizable and expandable logger for Node.js

A revised version of NanoLog which writes human readable log file, and is easier to use.

Easy to use and lightweight logger for iOS, macOS, tvOS, watchOS and Linux in Swift.

A rolling, append-only, local and remote data stream library for Go

Logger

Lightweight logging framework for bash

Moesif Nodejs Middleware Library (formerly Moesif-Express)

Logger framework for Erlang applications