IDE - Integrated Development Environment
An integrated development environment is a programming environment that can have a code editor, a compiler, a debugger and a What you see is what you get (WYCIWYG) editor in a single package. This type of environment allows an application developer to write code while compiling, debugging and executing it at the same place.
For example : An IDE for the .NET applications is Microsoft Visual Studio and for developing Java Applications, an Integrated Development Environment of NetBeans can be used.
IDE - Integrated Drive Electronics
Integrated Drive Electronics is a standard electronic interface used to connect motherboard to a disk storage device, like an HDD. The IDE was adopted as a standard by ANSI and named for it as Advanced Technology Attachment (ATA).