Code review is an activity in software quality assurance where one or more developers examine another developer's code before merging and delivering it to detect bugs, issues, offer feedback, and ensure high-quality code. Code review tools are available to facilitate this process by providing a structured layout, simplifying code access and understanding. The advantages of code review include detecting bugs early in the development process, ensuring compliance with coding and security best practices, allowing new developers to learn from experts, reducing miscommunications among teams, and utilizing comments and discussions as informal documentation for future use. Automated code review tools like PR-Agent by CodiumAI, GitHub, Bitbucket, Collaborator, Crucible, JetBrains Space, Gerrit, GitLab, and RhodeCode offer various features such as analysis of changes, generation of detailed descriptions, provision of specific recommendations, integration with version control systems, real-time insights, personalized notifications, and more. Selecting the correct tool that suits your team's needs is essential for optimizing the review process and shipping high-quality code.