Stack Filter is a free Chrome add-on developed by canon. It is designed to add a profanity filter to StackOverflow and StackExchange chatrooms, providing a more pleasant and respectful communication experience.

With Stack Filter, users can easily customize the filter mode according to their preferences. The add-on injects a dropdown menu that allows users to choose between four different filter modes. The first mode, Blur, blurs out profanity matches and reveals them only when hovered over. The second mode, Replace, replaces profanity matches with symbols such as The third mode, Remove, completely removes any profanity matches from the chatroom. Finally, the fourth mode, Ignore, simply ignores any instances of profanity.

One of the notable features of Stack Filter is the newly added configuration panel. This panel allows users to maintain and manage their filtration patterns, giving them greater control over the filtering process. This means that users can easily update and customize the profanity filter to suit their needs.

Stack Filter is an invaluable tool for those who frequent StackOverflow and StackExchange chatrooms and wish to create a more respectful and enjoyable communication environment. With its customizable filter modes and configuration panel, it offers a seamless and user-friendly experience for users in need of a profanity filter.