- redhillonrails_core 22
- query_reviewer 21 This rails plugin not only runs "EXPLAIN" before each of your select queries in development, but provides a small DIV in the rendered output of each page with the summary of query warnings that it …
- abingo 18 Rails AB Testing
- blackbook 16 the blackbook gem on github.
- delayed_job 15 Database based asynchronously priority queue system -- Extracted from Shopify