PCManFM-Qt is a free and open source lightweight file manager for Linux. It is the official file manager for the LXQt desktop environment. But you can install on any other Linux desktop environment It is a fork of popular PCManFM file manager. It is based on Qt and released under GNU General Public License v2.0. It comes with icon view, thumbnail view, compact view, and detailed list view, sorting, showing of hidden items, thumbnail View, history, filter bar, bulk renaming, change folder icon and many more.
How to install PCManFM-Qt on Ubuntu
To install PCManFM-Qt on your Ubuntu Linux, run below command. It will install the latest version of PCManFM-Qt on your system.
sudo apt install pcmanfm-qt -y
After the successful installation you can open from the Show Apps dock menu or via below command in terminal.
pcmanfm-qt