It's FOSS published a quick tutorial about creating curve text in GIMP in 5 simple steps.
How to Curve Text in GIMP [in 5 Simple Steps]
Using the 'text along path' feature, you can bend text in GIMP. Here's a screenshot tutorial to show you the steps for creating curve text in GIMP.
How to Curve Text in GIMP [in 5 Simple Steps]
