silk 0.0.1
It allows you to write rake tasks to do common tasks, such as creating email addresses, adding users etc. Silk provides a HTTP wrapper the the rake tasks, and allows communication via JSON objects, which makes it dead easy for them to be called from a web app.
Gemfile:
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install:
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Runtime Dependencies (2):
daemons
>= 0
SyslogLogger
>= 0
Development Dependencies (1):
thoughtbot-shoulda
>= 0