CRM is utilized by many different types of companies, both large and small. The exact methods and devices employed will vary from one business environment to another. To get an idea of how a given company employs CRM, try looking for information on their customer service structure, or general customer care strategies.
Open source CRM is a term often associated with the use of software or automated processes to provide customer care. Again, companies of many different types and sizes will make use of this tool to keep customers happy.