evil-seed by evilmartians

Ridgepole is a tool to manage DB schema. It defines DB schema using Rails DSL, and updates DB schema according to DSL. (like Chef/Puppet). Maintained by ridgepole on GitHub, where it has earned 1,116 stars from the community.

Add support for master/slave database clusters in ActiveRecord to improve performance. Maintained by bdurand on GitHub, where it has earned 222 stars from the community.

A collection of Ruby libraries for working with SQL on top of ActiveRecord's connection. Maintained by github on GitHub, where it has earned 698 stars from the community.