Kaugushi is a free Chrome browser extension developed by otamajaccy. It falls under the category of Browsers and belongs to the subcategory of Add-ons & Tools.

This extension specifically works on twitter.com and has a simple yet unique functionality. It converts all instances of the words "結婚," "ケッコン," or "けっこん" on the timeline into "ケコーン." This feature adds a touch of fun and humor to the Twitter experience.

Apart from this distinctive functionality, Kaugushi does not offer any additional features. It is a straightforward extension that focuses solely on replacing specific words on the Twitter timeline.

Please note that this extension is only compatible with the Chrome browser.