Wikipedia provided this simple description, which would be nice to see on the RC post (but perhaps they assumed the only folks interested in an RC post would be folks familiar with the tool already):
Lazarus is a free cross-platform visual integrated development environment (IDE) for rapid application development (RAD) using the Free Pascal compiler.
Lazarus is a free cross-platform visual integrated development environment (IDE) for rapid application development (RAD) using the Free Pascal compiler.