1. Data Collection: AWS Config primarily focuses on tracking and managing configurations of AWS resources, while CloudCheckr goes beyond configurations to also include cost management, security, and governance functionalities.

2. Integration with 3rd Party Tools: AWS Config provides APIs for integration with third-party tools, enabling users to build custom solutions, whereas CloudCheckr offers a robust ecosystem of integrations with various third-party tools out of the box.

3. Compliance Monitoring: AWS Config helps users ensure compliance with industry standards and best practices by continuously assessing the configuration of AWS resources, whereas CloudCheckr offers comprehensive compliance monitoring across multi-cloud environments, including AWS, Azure, and Google Cloud Platform.

4. Cost Optimization: CloudCheckr offers advanced cost optimization features, such as cost forecasting, budget alerts, and recommend cost-saving adjustments, while AWS Config primarily focuses on configuration management without specific cost optimization tools.

5. User Interface: AWS Config provides a basic web interface for viewing configuration history, while CloudCheckr offers a more user-friendly and intuitive dashboard with customizable reports and interactive visualizations.

6. Scalability: CloudCheckr offers scalability across large and complex cloud environments, supporting multiple AWS accounts and regions, while AWS Config may have limitations in managing scalability for larger organizations or multi-cloud environments.

In Summary, AWS Config is more focused on configuration management of AWS resources, while CloudCheckr offers a broader range of functionalities including cost management, compliance monitoring, and scalability across multiple cloud platforms.