Umlauter is a free Chrome add-on developed by Florian. It falls under the category of Browsers and specifically belongs to the Add-ons & Tools subcategory. This program is designed to correct common German transcriptions by automatically adding Umlauts to words.

One of the main features of Umlauter is its ability to correct words like "Kuehe" to the proper Umlaut form "Kühe" when typed in a textbox followed by a space or period. This is particularly useful for users typing German on US-keyboards.

It's important to note that Umlauter requires access to websites in order to correct typing in input boxes. However, all data is processed locally and is not sent to remote servers, ensuring privacy and security.

Another noteworthy aspect of Umlauter is that it utilizes machine learning to predict whether a substitution should be made. This helps prevent false positives and ensures accurate Umlaut additions.

Overall, Umlauter is a valuable tool for individuals who frequently type in German and want to ensure proper Umlaut usage without the need for manual corrections.