1. Integration with IntelliJ IDEA and Android Studio: Codota is directly integrated into IDEs like IntelliJ IDEA and Android Studio, providing real-time code completions, whereas Spring Tools 4 focuses on providing a rich development environment specifically for Spring Boot projects within the Eclipse IDE.
2. Code Recommendations vs. Code Completion: Codota offers intelligent code recommendations based on the code context, leveraging AI and machine learning algorithms, while Spring Tools 4 focuses primarily on providing code completion features to help developers write code faster.
3. Support for Multiple Languages: Codota supports multiple programming languages beyond just Java, including Python, JavaScript, and more, catering to a wider range of developers, whereas Spring Tools 4 mainly focuses on Java development and offers additional support for Spring projects.
4. Online vs. Offline Usage: Codota relies on an online service to provide code recommendations, requiring an internet connection for full functionality, whereas Spring Tools 4 is an offline tool that operates within the developer's local environment.
5. Community and Documentation: Codota has a growing community of users contributing to its knowledge base and providing support, while Spring Tools 4 benefits from the extensive documentation and resources available within the Eclipse ecosystem.
6. Ease of Use and Learning Curve: Codota aims to be user-friendly with minimal learning curve, providing immediate value through its intelligent code suggestions, compared to Spring Tools 4, which may require more familiarity with the Eclipse IDE and Spring framework for optimal usage.

In Summary, Codota and Spring Tools 4 differ in their integration with IDEs, approach to code recommendations, language support, online/offline usage, community engagement, and ease of use for developers.