"Clone" doesn't sound bad to me coming from a programmer. Any programmer who is good enough to create an exact clone will find it psychologically impossible to

"Clone" doesn't sound bad to me coming from a programmer. Any programmer who is good enough to create an exact clone will find it psychologically impossible to do so. There's no way a programmer could complete a clone without thinking, "I can do better... they should have done it this way... it will be much better and more successful if I change this part." Maybe I'm wrong, though, and I'm probably naive. Are there any software clones that aren't just inferior knock-offs, implemented by cheap labor hired by someone who never intended to match the quality of the original? I wouldn't count any product that beats the original in any meaningful way, such as better support for a certain language.