IDE
In short: An IDE (integrated development environment) is a development environment that combines editor, compiler and debugging tools.
In more detail: It makes programming more comfortable and faster.
In Depth
Features
Syntax highlighting, autocompletion, error hints, debugger, version control (Git), project management, tests.
Examples
IntelliJ IDEA, Eclipse, Visual Studio, VS Code, PyCharm.
In the browser
Emzett offers its own browser IDE at /ide with editor, execution and debugger. See source code, SDK.
See also: Git, Source Code, SDK, JDK