Mongrations
Mongrations aims to be similar to ActiveRecord's data migrations, except instead of worrying about schema changes, offering a way to change data when necessary.
Example
To generate a mongration:
rails g mongration whatever_you_want_your_mongration_to_be
Perform migrations
rake mongo:mongrate
Other rake tasks mongo:mongrate:redo, mongo:mongrate:up, mongo:mongrate:down, mongo:mongrate:rollback, mongo:mongrate:version.
License
Released under the MIT license