FileMan

A single panel file Manager forked from 351Files.

Based on DinguxCommander.

Original page: https://tardigrade-nx.github.io/2011/dinguxcommander
Upstream: https://github.com/Tardigrade-nx/351Files

Features:

Single panel file manager
Copy, move, rename, delete, create directories and files.
Display file size, compute directory size
Text file viewer
Text file editor
Image viewer (original size or fit screen, next / previous image)

Buttons:

d-pad: move
A: open / validate
B: cancel / back
X: open context menu
Y: select / unselect item
R1/R2: page down
L1/L2: page up

Image viewer:

d-pad: next / previous image, or scroll image
A: switch original size / fit screen

Text editor:

d-pad: move
A: open virtual keyboard / validate
B: cancel / back
X: open context menu
Y + d-pad: select text
R1/R2: page down
L1/L2: page up