Dietitian Brenna at Eating Simple has a recent post on sugar substitutes, which I sometimes refer to as non-caloric sweeteners (not entirely accurate). She reviewed sucralose, saccharine, aspartame, and acesulfame potassium.
A few days later, she reviewed sugar alcohols.
Many who have a sweet tooth, including myself, use sugar substitutes such as sugar alcohols. Sometimes they affect blood sugar levels, although not as much as sugar.
Brenna links to a Mayo Clinic article on artificial sweeteners.
I never got excited enough to cover this topic in detail myself. Thanks, Brenna!