Reporter adds a consistent way to build reports.

A RGeo PostGIS extension to provide Active Record (Model) clustering functionality

MetaWhere offers the ability to call any Arel predicate methods (with a few convenient aliases) on your Model's attributes instead of the ones normally offered by ActiveRecord's hash parameters. It also adds convenient syntax for order clauses, smarter mapping of nested hash conditions, and a debug_sql method to see the real SQL your code is generating without running it against the database. If you like the new AR 3.0 query interface, you'll love it with MetaWhere. - forked and gemified for sayso

sportweb - instant open sports web admin browser command line tool

This module implement [to_spreadsheet | xls] to ActiveRecord::Relation

A Ruby client for sqlcached

Covert SQL back to an AST so you can modifications to the AST.

Tramp provides asynchronous ORM layer.

Perform weighted averages, even across associations. Rails 3 only because it uses ARel.

Wherewolf allows you to consume search terms as strings without worrying about database injections. It parses the query and converts it into ARel. It's great for creating filterable REST APIs.