What are the differences between xtol and d76 developers for film processing?

Xtol and D76 are both developers used in film processing, but they have differences in their chemical composition and effects on the final image. Xtol is known for producing finer grain and sharper images, while D76 is more versatile and can be used with a wider range of films. Additionally, Xtol has a longer shelf life and is less toxic compared to D76.