I'm finding that I don't like much added salt. I bought some sugar free ketchup but it has 70 mg sodium per Tbsp. That doesn't seem like much but if I have 2 or 3, I notice the effect--my fingers swell up and I find that a little disturbing. Now Cathy Fisher has a home-made ketchup recipe here. I will try this sometime because it does look good. But in the meantime, if you need a quick ketchup fix in a small amount, and don't want salt or sugar, here's an option. It only has 2 ingredients! You need a fancy-pants vinegar, probably apple-flavored. Here are some websites with fancy-pants vinegars: Cuisine Perel (they make the best d'angou pear vinegar), Olive tap, Vom Fass. The other is a tube of tomato paste. Those are nice because you can use small portions and the rest doesn't go bad. Mix them together, add a little water.
Tonight, housemate was serving up a meatloaf dinner to her brother. I was able to eat pretty much the same dinner, just subsituting my veggie burger (with ketchup and mustard) for the meatloaf and topping my potato with soy yogurt and chives. It was fun. I had to pass on the dessert though (cake and ice cream).
Speaking of veggie burgers, fat-free vegan just posted one that looks really good: http://blog.fatfreevegan.com/2012/09/savory-lentil-mushroom-burgers.html
At the bottom of that post are links to some of her other burgers.