Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Doretha Clemons, Ph.D., MBA, PMP, has been a ...

When Steve Jobs made his return to Apple, the company was facing some stiff competition by way of the NeXTStep platform, which was created at Jobs' other company, NeXT. But instead of competing, Apple ...