This refers to metabolism of fructose. Many fruits contain high amounts of fructose (hence the name :) in addition to glucose. So does ordinary table sugar (sucrose, which contains equal parts glucose and fructose), and most other sweets you can find --- candy, soft drinks and so on.
Dietary fructose is rapidly metabolized, mostly into glucose, glycogen and fat. This happens mostly in the liver, but also in the intestines and kidneys; these are the only tissues known to express the enzymes involved (see the answer given by sunboyharry), as well as the transporter protein that brings fructose into the cells. Neither the transporter nor these enzymes are controlled by insulin, as far as we can tell, they are always active and ready to convert any fructose that comes around. This differs markedly from glucose metabolism, where both the transporter and key metabolic enzymes are activated by insulin. A review article is found here.
This arrangement makes sense given that the "goal" is to rapidly convert fructose to glucose (the "standard" blood sugar in mammals), and into storage forms (glycogen, fat). But since the glucose obtained from fructose is controlled by insulin as usual, in the end the effects of eating glucose or fructose are similar. Also, ingesting fructose does lead to an insulin response, probably because it is converted to glucose. While there is some research that suggests high fructose intake is more dangerous than glucose, particularly for the liver, I'm not sure there is any conclusive evidence or a scientific consensus about this yet.