SpotBugs is an open-source static analysis tool designed to identify potential bugs in Java programs. It analyzes the bytecode of Java applications to detect issues such as null pointer dereferences, infinite recursive calls, and other common programming errors. By providing developers with insights into their code, SpotBugs helps improve software quality and maintainability. The tool is a successor to FindBugs, which was widely used for similar purposes. SpotBugs offers a user-friendly interface and integrates well with popular development environments like Eclipse and IntelliJ IDEA. It supports various bug detectors and allows customization to suit specific project needs.