CiviCRM is probably the best CRM system I have seen on the market for non profits.
It has all the features our clients need - most of them straight out of the box. There is also a wealth of knowledge on the community forums and many plugins created by the Drupal community.
We would recommend CiviCRM as our first choice to our clients in the non profit sector who are looking for a CRM solution.
I have been part of CiviCRM project from the beginning and feels great to see how it has grown over the years.
I am glad to be associated with such a wonderful open source project and an awesome community around it.
As a consulting organization working primarily with non-profit organizations the CiviCRM community helps us solve issues for the organizations we work with. The CiviCRM community is a great resource to share ideas and solutions to help the organizations we work with focus on accomplishing their mission.