Low Carb Diet for Spaghetti Loves

When speaking of low carb pasta, we need to define our terms. Regular refined white pasta can have as much as 50 grams of carbohydrate per cup of cooked pasta. Few people I know would be satisfied with a cup of pasta. With sauce, a real world serving could involve hundreds of grams of carbohydrate. This much carbohydrate in one sitting would produce a huge spike in blood sugar, especially if the person were diabetic.
The trick is to find an alternative to the refined pasta which has much less carb and/or digest much slower.