GIMP 3-D, 3 Ways

“Create some text with GIMP’s Text tool — the big A button in
the toolbox. Click in the image, choose a color, font and size, and
type your text to create a new text layer on top of your
photograph. You can move the layer around to put it whereever you
want it.

“Then select the text, with Layer/Transparency/Alpha to
Selection. Invert that selection with Select/Invert — now
everything except your text is selected — and bring up the
Filters/Light and Shadow/Drop Shadow… dialog. Un-check the Allow
resizing box and click OK.”

Complete
Story