Having used both, Qt Creator is so much better than eclipse that it's not even funny. Of course, you first have to forget your eclipse habits and learn the equivalent QtC ones - in particular using the locator (http://doc.qt.io/qtcreator/creator-editor-locator.html), and the available refactorings (http://doc.qt.io/qtcreator/creator-editor-refactoring.html). Recent versions also ship with a clang backend for completion ; it also supports clang-format and clang-tidy natively, with inline fix-its that are shown automatically.