Actually ... ALL of the powdered sweeteners .. Splenda, Equal, Sweet'n'Low, SugarTwin, NoName, WalMart's brand, etc, etc, etc .. use maltodextrin and sometimes a little dextrose too, as filler. In all cases, the artificial sweetener itself is zero carbs, so it's the filler that provides all of the carbs in any given product. Equal, SugarTwin etc require less filler than Splenda, that's why there's fewer carbs.

For all of the sweeteners, including Splenda, the calorie and carb count is the SAME for the pourable spoonable bulk type and their partner product in the little paper packets/sachets. Even though the volume of powder is different .. the weight is the same. The bulk pourable stuff has been fluffed up more, to make it resemble sugar and to be easier to measure and use. The powder in the paper packets is denser and more crystalline, but has the same weight and carbs as the bulkier, fluffy stuff .. One packet/sachet is equivalent to 2 tsp sugar in sweetness; this is standard amongst the different brands.

• Splenda = one packet/sachet is 1g carb ... the bulk form is 0.5g carb for 1 tsp, or 1g for 2 tsp.
  
• Equal = one packet/sachet is 0.8g carb ... the bulk form is 0.4g carb per tsp, or 0.8g for 2
  
• SugarTwin (Canada) = one packet/sachet is 0.5g carb ... the bulk form is 0.2g per tsp (rounded down) so 0.5g for 2

I'm aware that there is at least one brand of natural stevia sweetener powder, that uses maltodextrin as a filler

Doreen