Let me be clear about something. GIMP is probably my favourite piece of open-source software. Truth told, I could have a license for Photoshop or PaintShopPro, and I would still use GIMP. That’s because it is so focused on functionality over style – which means that, despite its limited development (it’s open-source after all), it is a program that has the horsepower to compete with the big players. All you have to do is learn its quirky UI!