I use it mainly because I love FOSS. Looking at what sets it apart technologically, I really like two plugins: Liquid Rescale and Resynthesizer (Heal Selection)

I use it mainly because I love FOSS. Looking at what sets it apart technologically, I really like two plugins: Liquid Rescale and Resynthesizer (Heal Selection), the very wide support of formats, including niches like the windows icon format, and the fact that I can use it everywhere legally.