Stack-based programming languages use a data structure called a stack to manage information. In these languages, operations are performed by pushing data onto the stack and then manipulating it using commands that operate on the top elements. This approach simplifies the handling of data and control flow, making it easier to write certain types of programs. Examples of stack-based languages include Forth and PostScript. These languages often have a minimalistic syntax, relying on a series of commands that operate on the stack. This design allows for efficient execution and can lead to compact code, as many operations can be expressed in a few instructions.