At Pogstone, Inc. we love CiviCRM! The community has been great and inclusive. The idea of open-source allows us to stay on par with large, proprietary companies. We offer installation of CiviCRM, training and hosting.
Palante Tech works with social justice organizations on a tight budget to be more effective through technology. CiviCRM allows us to provide a high-quality low-cost database for community organizing, donor and membership management.
We feel there are too many obstacles facing not-for-profits (NFPs) considering commercial CRM offerings, including many of those that are charity oriented. From licensing models which restrict the fluid expansion of an organisation's user base (why should you be punished with higher costs for being successful?), to support from commercial companies being inherently tied to one supplier; a NFP would benefit from the option to 'shop around' for those most appropriate, e.g. based on: proximity and availability on-site, cost, experience, value added services... They also often lack the capacity for charity relevant workflows, necessitating either customisations, complicated and inefficient workarounds or an en-masse call for new functionality, as individual charities do not appear to carry the weight required to influence subtle NFP-only changes to market leading software, without large expense.
On the flip side, CiviCRM is completely free and open-source, carrying with it a friendly, hard-working and enthusiastic community of developers and implementers, constantly listening to the users' needs and sculpting future releases to the requirements of NFP organisations. This is exciting!