1. Build Process Integration: Harbor is designed to work with existing build tools and pipelines, allowing users to integrate their container image builds seamlessly into their existing development workflows. In contrast, Jib is primarily focused on simplifying the image building process for Java applications by eliminating the need for Docker and Dockerfiles, enabling developers to deploy their applications without needing to understand containerization complexities.

2. Speed and Efficiency: Jib is known for its fast build times and efficient image layers, optimizing the size of the final container image and reducing deployment time. On the other hand, Harbor offers more flexibility in terms of customization and support for various container formats, making it a preferred choice for organizations with diverse technology stacks and deployment requirements.

3. Security Features: Harbor provides comprehensive security features such as vulnerability scanning, image signing, and access control policies to ensure that containerized applications are secure and compliant with industry standards. In comparison, Jib focuses on simplicity and ease of use, which may not offer the advanced security features needed for enterprise-level applications.

In Summary, Harbor and Jib cater to different needs in the containerization ecosystem, with Harbor offering more customization and security features, while Jib excels in simplicity and efficiency for Java applications.