Photoshop vs Gimp

[LooseCaboose]

But Gimp has more people checking and double-checking and triple-checking the code than Photoshop.

You hear this code checking, and many eyes stuff about open source projects all the time and how much better it is than closed source. But quite honestly, its often a load of rubbish. A large amount of open source code is submitted by people who aren't being payed to do it. They don't want to spend their spare time reading other peoples code just to see if they can spot any obscure bugs. In house development, on the other hand, typically has people being payed to systematically do code reviews and testing. So while open source has many people who could look at the source if they were so inclined, closed source has a few people who are looking at the source because they are payed to do so.

Software development companies are also much better equipped for rigorous testing. If an open source developer made some changes to the input handling in the Gimp, they would either have to own several hundred different input devices to test it, or wait until others who have that hardware can test it for them. A company like Adobe will have many of those hardware devices in their testing areas.