OU Tools is a free Chrome add-on developed by 녹색분자 that aims to enhance your 오유 (오늘의 유머) experience. This add-on brings together a collection of useful features for users of the popular online community.

With OU Tools, you can easily add GIFs or images to your comments with just one click. It also provides a temporary save feature for your posts, ensuring that you don't lose your work in case of accidental deletion.

Additionally, the add-on offers a shortcut key for quick access to 오유. You can bookmark your favorite boards for easy navigation and even block certain boards like 일베. OU Tools also allows you to add memos next to member names, making it convenient for you to remember important details.

Other features include disabling background music, toggling the double-click function, and blocking specific IP addresses. OU Tools aims to enhance your 오유 experience by providing a range of useful functions.

Overall, OU Tools is a valuable Chrome add-on for 오유 users, offering a variety of features to enhance your browsing experience. It is free to use and can be found on the Chrome Web Store.