Yes, there are lots of resources on the web, just type Glycemic index into your search engine.
There isn't one I use per se...
I know what you mean about the lists, but really, it's a matter of remembering that generally, Whole wheat products, and things with seeds and nuts in them (like whole grain bread) are lower GI carbs, and that combining them with lots of non-startchy veg, a moderate amount of protien, and some fat, will be low GI. Dairy products are low GI, if you eat them.
For example, a whole wheat samwich with lettuce, onion, artichoke, beetroot for example, with plently of hummus. That will release energy steadily.
It's really just healthy eating with a little more thought!
Lastly, don't be put off by diabetic websites or books, as it's the same thing - you don't have to be diabetic to eat low GI! gooD LUCK