http://www.artwork.com/gerber/index.htm

Gerber Related Translators and Postprocessors

Viewers and Tools
GBRVU
View and plot Gerber (RS274D, RS274X and MDA) data. GBRVU has one of the best plotter drivers of all available viewers. Windows and UNIX.		 GBR2DXF
An easy to use converter from Gerber to DXF. Ideal for producing documentation data for PCBs. Recommended for PADS users - don't let that nasty PADS DXF output mess you up...		 GBRUNION
GBRVU Union "contourizes" complex gerber files. Ideal for adding edge factor compensation for fine line work. Also used to clean up Gerber for entry into field analysis and parasitic extraction programs.
GBRVU/X
Our GBRVU with the ability to select a window region and export the data crossing that region to DXF. Originally designed for field analysis tools that needed DXF (Ansoft Spicelink) as their input.		 GBR_RIP UNIX
A very precise, high resolution, fast RIP for Gerber data running on Solaris and HPUX. Ideal for plotting Gerber data to Laser jets, Inkjets or converting Gerber data to PDF.		 GBR_RIP II
A very precise, high resolution, fast RIP for Gerber data. Ideal for inspection, machine vision and imaging machines. This is an OEM version designed to be incorporated into someone else's software. Runs on Windows NT. Second generation, incorporating stuff we learned from major imagesetting OEM's.
AutoCAD Translators
ASM 501
Low cost Windows bi-directional translator from AutoCAD to Gerber. For simple PCB boards.		 ASM 502
Medium cost Windows bi-directional translator from AutoCAD to Gerber. For Analog, RF, Microwave and IC Packaging.		 ASM 500
High End Windows bi-directional translator from AutoCAD to Gerber. For Analog, RF, Microwave and IC Packaging, chem milling etc... Featuress powerful line linker routine.
Other Translators
ASM 700
Convert's HP's ME-10 file format to Gerber. The program is useful to designers who wish to use ME-10 or ME-20 to create phototools for packages, optical encoders or microwave circuits.

GBRMERGE
This program can combine multiple RS274D files into a single RS274X file.

 ASM 600
Converts GDSII Stream (Calma) data to Gerber. Ideal for IC packaging, MEMs, and other technologies where IC layout tools are used and films are required.

Aperture Translator
Free Windows program converts apertures from a wide variety of programs into Artwork's .apt format.

 HP2GBR
Reads HPGL and converts to Gerber. One of the most robust conversions available. Supports more HPGL and HPGL/2 commands than any other HPGL translator.

GBR2EGS
Ideal for importing Gerber into Agilent's ADS.
Application Notes
PCB Check Plotting
A team of 20 designers can plot their Gerber files via our GBRPLOT program to high speed printers/plotters just like they were printing ordinary files.
 

Pentax Format - Converting to RS274X
Pentax is a Gerber "like" format commonly used in Japan. While it looks like Gerber it must be processed much differently ...

 D-Codes, Apertures and Plot Files
An excellent tutorial covering the basics of Gerber data. IF you're new to Gerber read this. 
 
 

Official RS274X Spec
Stop asking where you can get the RS274X spec and download this PDF file from Barco's site. (64 pp)

 What's all this about RS74X anyway?
Moving from RS274D to RS274X and want to know what's in it and how it works? Read this excellent tutorial explaining embedded apertures, macros, polygon fill and image plotting controls.

Cleaner Gerber to DXF Translations
Artwork’s GBRUnion program can eliminate the overlapping flashes and draws and output to AutoCAD nice clean boundaries.
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