dwbutler/logstash-logger

A structured logger for Fluentd (Ruby)

A simple, powerful, and very fast logging utility that can be a drop in replacement for Logger. Provides support for automatically rolling log files, formatting log output, and tagging log entries.

An attempt to tame Rails' default policy to log everything.

Semantic Logger is a high-performance, asynchronous structured logging framework for Ruby and Rails.

Logback JSON encoder and appenders

Rails Semantic Logger replaces the Rails default logger with Semantic Logger, so that Rails, your application code, and many common gems all log through structured logging instead of plain text.

Fluent logger

Splunk logging appenders for popular Java Logging frameworks