There was a download of Qt OpenSource 4.8.6 on the developer's website when we last checked. We cannot confirm if there is a free download of this software available.
Cmd.exe, assistant.exe, MaintenanceTool.exe, notepad.exe and Qt3DViewer.exe are the most frequent filenames for this program's installer. The software relates to Development Tools. This free software was originally developed by Nokia.
Qt OpenSource can be installed on 32-bit and 64-bit versions of Windows XP/XP Professional/Vista/7/8/10/11. The following versions: 4.8, 4.7 and 4.6 are the most frequently downloaded ones by the program users. We recommend checking the downloaded files with any free antivirus.
From the developer:
You may want to check out more software, such as Qt Installer Framework, Qt or Qt Linguist, which might be related to Qt OpenSource.