callback_hell

Callback Hell is a Ruby gem that analyzes your Ruby on Rails application models and provides actionable insights on callbacks and validations. Use it to identify models that might benefit from refactoring, spot callback pollution from gems and associations, and keep your models clean and maintainable. Maintained by evilmartians on GitHub, where it has earned 142 stars from the community.

It's actively developed around callbacks, profiling, refactoring, and is a solid reference for anyone building with these tools.