Uses created_by_user_id and updated_by_user_id to store the changes made to a record. This is limited to storing the user who created the record and the last user to update the record.

MySQL tool for audit all tables with triggers.

Audit

Logger which creates additional files for a more orderly logging information in Rails apps.

Audit gem for Ruby on Rails projects

tracks_changes provides a way to easily keep track of changes to ActiveRecord models at an attribute level and maintains the typecasting in the database.

Simple log parser for ip and routes.

A gem for tracking record changes and controller actions