Developer's Image Library or DevIL (originally called OpenIL; the name was changed at a request from Silicon Graphics, Inc.), started by Denton Woods, is a cross-platform image library which aims to provide a common API for different image file formats. It consists of three parts: the main library (IL), the utility library (ILU) and the utility toolkit (ILUT), mirroring the corresponding parts of OpenGL (although the OpenGL Utility Toolkit is not part of the OpenGL specification).

The devil (from Greek: or diábolos = slanderer or accuser) is believed in many religions, myths and cultures to be a supernatural entity that is the personification of evil and the archenemy of God and humankind. The nature of the role varies greatly, ranging from being an effective opposite force to the creator god, locked in an eons long struggle for human souls on what may seem even terms (to the point of dualistic ditheism/bitheism), to being a comical figure of fun or an abstract aspect of the individual human condition.