Active Record without Database
Lazy loading associations for the ActiveRecord models
Gem to create tables grids with sortable columns and filters
Annotate Rails classes with schema and routes info
WhereChain - don't write Post.where('comments > ?', 5), write Post.where.gt(comments: 5) instead!
Use Youtube-Like ID in ActiveRecord seamlessly.
This gem automatically logs SQL EXPLAIN of every queries
Arca is a callback analyzer for ActiveRecord ideally suited for digging yourself out of callback hell
A curated list of awesome Python libraries, which implement models, schemas, serializers/deserializers, ODM's/ORM's, Active Records or similar patterns.