Manage badges, points and rankings (reputation) in your Rails app.
ActiveRecord Reputation System gem allows rails apps to compute and publish reputation scores for active record models.
Adds common gamification features such as points, leaderboards, and achievements to a Rails Application.
Add "badges" to any Rails model.
Recognize users by giving them points and rewards for their actions
reputation is designed to help calculate reputation scores based on user behaviour and rules that are easily editable.