Latest Versions (OsmondCocoa)

OsmondCocoa was designed using the latest Cocoa application framework. Although the User Interface is modern, the algorithms and methodology are based on a legacy of design going back over a decade.

Two versions are now available: A 64-bit version for MacOS High Sierra and greater, and a 32-bit version for prior OS X versions. Please pick the version that matches your machine.


Version 1.2.8

This is a 64-bit application that should run on MacOS High Sierra (10.13) and greater.


Version 1.1.40

This is a 32-bit Universal Binary for both Intel and PowerPC machines running MacOS X 10.5 through MacOS X 10.13.

These are free downloads. All restrictions are removed and the program is fully functional. Donations are accepted at the Donate page.

Prior Versions

Prior versions of OsmondCocoa are available upon request.

Tutorial Files

If this is your first time using Osmond, you will probably want to download the Osmond Tutorial Files folder, which contains example files and libraries used in the Tutorial. The Tutorial can be accessed from the Help menu.

Parts Libraries

A Starter Library contains about 130 parts including through-hole, surface mount, and connectors (~28K).

This lower and upper case Alphabet Library of text characters is courtesy of Robert Rau (~3K).

Robert Zusman has provided a library of Osmond part types converted from Autotrax libraries (~88K), (

Also, a large library of Osmond part type converted from other sources is available here (~848K).

Legacy Versions

Osmond Quartz 1.0.12, built December 7, 2007, uses the Carbon GUI framework and Quartz graphics for rendering. This is a Universal binary for both Intel and PowerPC machines running MacOS X 10.4 or later.

A version of Osmond Quartz 1.0.12, built only for the PowerPC running MacOS X 10.4 or later is also available.

Osmond PPC 1.0.12, built December 7, 2007, is designed for MacOS 8.1 and later and MacOS 9 on a PowerPC machine.

Other Tools

Robert Rau has written three tools for Osmond which you can find here.

  • Device Placer, pre-locate up to 4 concentric rings of devices.
  • Slider Writer, foot print generator for capacitive sliders and buttons.
  • FPGA to Osmond, generates DesignWorks and Osmond library elements from a Xilinx partgen file.

Robert also has a new Osmond PCB web page containing very nice Lua script examples.

Graham Hinton has provided two DesignWorks forms that produce Osmond compatible Part List and Net List information from a DesignWorks design. The first is for flat designs and the second is for heirarchic designs. A modified version of the second script, provided by Don Heavener, is available here.

For those familiar with Python, I have developed a Python program called gerber2pdf that converts Gerber files to PDF so they can be viewed and printed easily with the Acrobat viewer.

Osmond PCB en Francais (1.0.12)

Télécharger OsmondF_PPC, la version PPC du programme Osmond.

Télécharger OsmondF_X, la version carbon du programme Osmond.

Télécharger le Manuel de prise en main

Toutes les traductions françaises sont effectuées par Dominique Larcher.

Pour toutes suggestions ou remarques concernant celles-ci