Several outlets have published reviews of the best knife sharpeners of 2026, with some focusing on specific types such as rolling knife sharpeners or whetstones. The reviews involve testing and comparing various sharpeners, with some outlets putting multiple products through rigorous tests, including slicing hundreds of carrots and tomatoes. The results appear to vary, with different outlets recommending different top picks, but all seem to aim to help consumers find the best knife sharpener for their needs.