Jaeunglee posted a new tool called "Unlearning Comparator" on Hacker News, designed to visually compare machine unlearning methods. This toolkit allows researchers and developers to test various unlearning techniques for accuracy, efficiency, and privacy within a unified workflow. A live demo is available on the linked website, and the source code is on GitHub. A research paper about the tool is under review at IEEE TVCG. In the comments, a user asked for a definition of "unlearning," which was then clarified with a link to the Wikipedia entry for Machine Unlearning. The creator encouraged the community to ask questions and provide feedback. The post also included a reminder to apply for Y Combinator's Fall 2025 batch before the August 4th deadline.