Gerbv software (version 10) is a sophisticated, open-source Gerber viewer that supports RS-274D and RS-274X Gerber formats. This software allows users to view, print and convert Gerber, Excellon and PDF files, making it a highly useful tool for PCB (printed circuit board) designers and engineers. Gerbv also has a broad range of capabilities including layer stackup, color view, zoom, the ability to measure distances, and analyze drill holes. It also features a user-friendly interface that supports drag-and-drop functionality.