Creme Framboise des Bois is a raspberry, 100% natural creme liqueur, meaning the sugar content will be somewhat higher than other liqueurs. They suggest drinking with champagne.
Giffard is a French company specializing in a wide variety of liqueurs and eua-de-vie among other products. Some of those extra products are flavored cocktail syrups (or "sirop"). They are generally sweetened with pure cane sugar.