Qt Creator is not the same thing as the Qt framework. Yes, that's right; it is just an IDE created by and for the Qt framework. This is what confuses many people who are somewhat new to these terms. So, what does that really mean? In a very basic definition, it means you can use Qt Creator or any other IDE to create Qt applications. At some point, when the Qt framework became rich with classes and functions, the people responsible for Qt decided to create an IDE using the wonderful Qt framework itself, and, voila! An IDE free from the operating systems and C++ compiler types was born. Qt Creator is an IDE that supports better integration with the Qt framework, it's open source (which basically means you can use it for free), it's cross-platform, and it includes almost all the tools required from an IDE. Here's a screenshot of the Welcome...
United States
Great Britain
India
Germany
France
Canada
Russia
Spain
Brazil
Australia
Singapore
Hungary
Philippines
Mexico
Thailand
Ukraine
Luxembourg
Estonia
Lithuania
Norway
Chile
South Korea
Ecuador
Colombia
Taiwan
Switzerland
Indonesia
Cyprus
Denmark
Finland
Poland
Malta
Czechia
New Zealand
Austria
Turkey
Sweden
Italy
Egypt
Belgium
Portugal
Slovenia
Ireland
Romania
Greece
Argentina
Malaysia
South Africa
Netherlands
Bulgaria
Latvia
Japan
Slovakia