There is a brand called Maple Grove Farms of Vermont that I can find here in NY at the X-mas Tree store very cheap. They have it sugar free and less than one g of carb. How great is that???
The one I am using now is Bacon Vinaigrette and has 90 cal/2 Tbsp and is delicious!!!
The other one is Balsamic Vinaigrette and has 0 cal. It isn’t as good as the bacon one though. But works if you are at the very low calorie diet.
Now I have a trick I use sometimes. I use Soy Sauce as salad dressing with some lime and it is delicious. I got one bottle of the Hannaford product and has only 10 cal/1Tbsp.
So I try vary as much as I can so I don’t get sick of my salad...
Hope it helps