Open source logger projects
Every project in the registry tagged logger, ranked by real GitHub adoption.
Sends your logs to files, sockets, inboxes, databases and various web services
A fast & simple, yet powerful & flexible logging framework for macOS, iOS, tvOS, watchOS and visionOS
Network logger for Apple platforms
NLog - Flexible and Structured Logging for various .NET Platforms
An ultra-lightweight(ROM<1.6K, RAM<0.3k), high-performance C/C++ log library. | 一款超轻量级(ROM<1.6K, RAM<0.3k)、高性能的 C/C++ 日志库
Apache Log4j is a versatile, feature-rich, efficient logging API and backend for Java.
Ultra-low-latency asynchronous C++17 logging and metrics library for performance-critical applications
Portable, simple and extensible C++ logging library
An extensible Java library for HTTP request and response logging
Digging through logs is not observability. It's hope — wide events, structured errors, TypeScript-first, every runtime.
📝 tslog - Universal Logger for TypeScript and JavaScript
Platform agnostic logger for NestJS based on Pino with REQUEST CONTEXT IN EVERY LOG
G3log is an asynchronous, "crash safe", logger that is easy to use with default logging sinks or you can add your own. G3log is made with plain C++14 (C++11 s
Apache Log4net is a versatile, feature-rich, efficient logging API and backend for .NET
☎️ Advanced error handler and logger for dart and flutter apps
Essential Building Blocks for Scala
A modern logging library for Javascript / Typescript that routes logs to various logging libraries, cloud providers, files, StatsD, and OpenTelemetry while prov
Related tags
Frequently asked questions
How many open source logger projects are there?
This registry tracks 17 projects tagged logger, with 73,876 GitHub stars between them. The most-adopted is monolog at 21,404 stars.
Are these logger projects free to use?
Yes — 17 of the 17 carry an explicit open-source licence across 4 distinct licences, so there is no licence fee. Where a project also sells a hosted or enterprise version, the self-hosted path remains free.
Which logger project should I choose?
The list above is ranked by GitHub stars, but stars measure attention rather than fit. Check three things on each card: the licence (permissive versus copyleft), the language it is written in, and the last-push date — a high-star project that has not been pushed in a year is a liability.
Are these logger projects still maintained?
17 of the 17 were pushed in the last 90 days, and every card shows its exact last-push date so you can see the rest. Sort your shortlist by that date before committing to a migration.