Request: Homemade Alfredo and Marinara Sauces

Just looking for some great homemade options for Alfredo and Marinara sauces. I usually have scads of tomatoes, peppers and onions in the garden during the summer and thought it would be fun to find some marinara recipes that use fresh ingredients. My stepson is also a huge Alfredo sauce fan and I'm bored with my current recipe. Any ideas???

I'm loving all the recipes coming in. I've tried three of them already and my family is really enjoying the variety! Thank you!