2 language site

hi,
I am searching for a solution to have 2 language (en/fr) site.
Here are what I need:

– I have both language contents. I do not need translator.
– Users can change language seamlessly by switching language.

After some research, i noticed most of them are ‘translator’ by generator I believe. This is not what I need. Could any body help me please?
Thank you very much!

jasmin