The open-source version of Qt Creator is not a "lite" version; it is a full-featured IDE used by professional developers worldwide. Qt Creator IDE – The Professional IDE for Qt Development

The most reliable way to get the open-source version is through the official channels provided by The Qt Company.

Qt Creator is a leading cross-platform Integrated Development Environment (IDE) designed specifically for the Qt framework. For developers looking for a , the platform offers a powerful, community-driven version that includes nearly all the core features of its commercial counterpart. How to Download Qt Creator Open Source

: Most distributions offer it in their repositories (e.g., sudo apt install qtcreator on Ubuntu), though these may be older versions.