Hello, I am looking to find a good source of Swiss records so I can trace Jean above, his wife Francoise Cherise Heckly and their son Charles Anatole Devit.

Jean's dob is around 1800, and Francoise around 1799. The family were in Mulhouse France by 1828, I have not found Charles but have found 4 other children born from 1828 in Mulhouse. I therefore have to assume that they moved to Mulhouse after Charles was born (app 1827). I have also not found a marriage record.
I have evidence that suggests Jean was born in Zurich so I'm thinking that is a logical starting point.

Can anyone recommend any good sources of information to help me in my search.

Many thanks.
Debbie