One school of thought came to the conclusion that Dashboard was a "rip-off" of Konfabulator. It points out the visual and functional similarities between Dashboard has been widely compared to Konfabulator (later Yahoo! Widget Engine) and sometimes called a copy of it, due to the similarities between their graphical aspects and the fact that they both use the term “widgets” to describe the objects in their environments. Konfabulator may, in turn, have been based on Apple’s Desk Accessories, first released in 1984 with the original Macintosh. Desk Accessories, similar to widgets, were small mini-applications that operated on a user’s desktop. After the introduction of System 7 and cooperative multitasking, the necessity of creating Desk Accessories was removed and developers were encouraged to create applications instead. The OS continued to support them, for backward compatibility, until the switch to Mac OS X (In fact, the Calculator desk accessory remained in the Mac OS through version 9, seventeen years without a significant update).