My absolute favorite for floor cleaning (among many other uses) is Shaklee Basic H2.

http://www.shaklee.com/products.php?sku=00015

I use it on my tiles, hardwood and laminate. It is neutral PH which is good for your floors and it is the only thing I've ever used on my tiles that won't leave a film or streaks.

I also use Bona on my hardwood and laminate. Is Greengaurd certified and works very well. I have the spray mop made by them that makes hardwood/laminate floor cleaning so much easier.

Use products that are specifically made for hardwood floors to avoid damaging your floor with products like vinegar and water or oil soaps.

When you say kitchen - what exactly are you wanting to clean? General cleaning of the kitchen (counters etc)?

Here is a link that might be useful: Bona Floor Mop

See link below for several good threads covering "Natural Cleaning Products".

Here is a link that might be useful: Forum search results for Natural Cleaning Products

I have been using "Mrs. Meyer's Clean Day" Dish soap and all-purpose cleaner for about a year now and love it! They have some great scents( basil, geranium,etc.) that dont give me a headache. While a bit pricey a little goes a long way. plus amazon sells it.
Also if your cleaning a lamitate floor the best thing i found is to just sprinkle a little Borax in some very hot water mop and rinse leave the floor super shiny.
Hope this helps.

Vinegar and baking soda are universally popular and effective Eco friendly cleaning items. You can try them.