I really doubt that such a product presently exists. I am hoping that the Splenda people will start bidding against the makers of aspartame for the lucrative sweetener business. Then we will see more products sans aspartame.

Meanwhile, why don't you experiment with aspartame? Have the Jello and see how it affects you. I have found, through many years of use, that it does not affect me at, all that I can discern. I far exeed the Atkins recommendation for its use and I'm losing weight on the plan.

Good Luck