Kommatroll

This program will add missing commas in your German texts and offer advice on superfluous ones as well. At the same time, the program identifies and corrects misspelled words. Kommatroll classifies comma errors into over 50 different categories, and can therefore provide targeted explanations and examples for each suggestion. In addition, explanations are also available for most existing, correct commas. All comments are available in both German and English. In the case of spelling errors, Kommatroll suggests the most likely correction.