opensource CRM/ERP system in Ruby on Rails

Do you know some opensource CRM/ERP system like xlsuite.org? XLSUITE is very old for me and my server. I need opensource system, because I can customize it for my job and I know RoR.

Solution

One example I know off the top of my head is: http://www.fatfreecrm.com/

How to filter IS NULL in ActiveAdmin?
Prevent change of one field in Rails model
Delay a user defined helper method with delayed_job
Rails scaffolding pluralisation is incorrect for "cafe"
Truncate table(s) with rails console
Active resource rails not fetching data
using Liquid variables inside of a liquid tag call
Ruby on Rails - Executing code on compile
How to trigger download with Rails send_data from AJAX post
Convert HTML to markdown
How do instance variables in rspec work?
Ruby / Rails - How to aggregate query results in an array?
check if object has been updated mongoid 3.x
Rails remote form and select on change not working
ActiveRecord OR query
Saving array of nested attributes with accepts_nested_attributes_for
Rails 3 / Form without Model: How do I create a form that is not tied to a model?
Path helpers generate paths with dots instead of slashes
Disqus Ajax is not taking different thread for diffrent posts in ruby on rails
Purge or recreate a Ruby on Rails database
Is the server running on host "localhost" (::1) and accepting TCP/IP connections on port 5432?
Ruby on rails convention for naming date/time fields
How to test private helper(module) method in rspec
Heroku push rejected, failed to install gems via Bundler
Ruby on Rails 3.2 Mailer, localize mail subject field
Rails Tutorial Michael hartl. Chapter 8 sign_in method, Why have we used writer method?
Does has_secure_password use any form of salting?
How to disable a form submit button "a là Ruby on Rails Way"?
Can't find the 'libpq-fe.h header when trying to install pg gem
How to add a data-attribute to each option of my select box?