I am going to stay in Zurich for a week, and I want to schedule guided day trips from there to various places in Switzerland. Any recommendations for day trip guided tour companies? Any specific excursions that you enjoyed? Thanks!
I suspect it will be difficult to find what you are looking for.
Zurich is hours away from the best parts of Switzerland, and most people use the excellent train system to get to those places.
You can always look at Viator or GetMyGuide to see what is available.
You do not need guided tours. Every place of interest in Switzerland is easily reached by public transit.
Which places do you want to visit?
And why a week in Zurich? There are more interesting places to base yourself at.
In the Zurich section of Rick's guidebook I bet he lists tour guides