ReviewNB

ReviewNB is a specialized tool for reviewing Jupyter Notebooks on GitHub. Data scientists often struggle with standard code review tools because notebooks are JSON-based and difficult to read in a diff view. ReviewNB renders notebooks beautifully, allowing for line-by-line comments and AI-powered suggestions. It is an essential tool for any team working with data science or machine learning workflows.

While it is not a general-purpose code reviewer, its niche focus makes it the absolute best in its category for notebook-heavy projects.