Ucamco发布了Reference Gerber Viewer v2.1 版本
Ucamco, caretaker of the Gerber Format, released version 2.1 of its online Reference Gerber Viewer. New features are : Support for drill files in NC or Excellon format and support for Gerber X2 attributes.
The URL of the Reference Gerber Viewer is https://gerber.ucamco.com