Bole is a straightforward, adaptable, and minimal logging library for Node.js and the browser. It is designed for flexibility, allowing users to define custom log levels and easily integrate with various output streams or third-party services. Bole excels with JSON logging formatted for efficient parsing, especially useful for centralized log management systems. Its simplicity makes it easy to understand and extend, while its speed and small footprint make it suitable for resource-constrained environments.