I'm don't know any reputable travel companies for Italy tours but i would recommend going to this website to look for a tours to italy (http://www.italiatours.com/)
There are many different online websites that have tours of Rome, Italy available. Some of these websites include ItalianoLimousine, Viator, DarkRome, Best Tours of Rome, Walking Food Tours of Rome, and TripAdvisor.
There are a wide range of sites that offer information regarding Italy tours. Some of the sites where one can find information are Rick Steves', Perillo Tours, and Tours-Italy. There is also a wealth of information available on the Tripadvisor site.
Afordable Tours, Trafalgar Tours, Perillo Tours. Those are all good options. You could also go with a school group and get a good deal on a vacation to Italy.
There are quite a few private tour guides from Italy on the site for finding personal guides called Viamigo - they are at http://viamigo.com/tours/italy.html - some driving tours, tours of Rome, walking, and of course Italian wine tasting tours which are not for the kids.
There are many great Italy tours available for a huge range of budgets. http://www.trafalgar.com/USA/Destinations/travel_italy.asp has some wonderful itineraries. Bon voyage!
A great place to find information about traveling to Italy is: http://www.italyvacations.com/day-tours-in-italy There you can find tours to Rome, Milan, Florence, and Venice.
Find popular vacation packages featuring trips to Italy by checking out Tours of Italy. This company has various trip packages with all kinds of trips around Italy.
There are many companies that offer tours of Italy. Some examples of companies that offer tours of Italy include Citalia, Scott Dunn, and Seasons in Style.
Travelsphere offers escorted tours and guided tours. Travelsphere offers tours to New England and Canada, Sri Lanka, Thailand & Laos, Italy, and Andalucia.
The tours that Collete Vacations are known for are their "Canadian Rockies & Glacier National Park" tour. Some of their other tours are "Italy's Treasures" and the "Netherlands, Belgium, and Paris." More information can be found on their official website, colletevacations.
Cinque, Italy offers many opportunities for walking tours because of its beautiful hiking tracks and beautiful environment. To find more information on what walking tours are available you should look on Tripadvisor.