Apache Web Server, GNU/Linux Operating System, MySQL Database, Mozilla's Firefox Browser.

All pillars among the open-source community.

Each of these deserves its imminent position as a venerated project. Each has changed the world, and not a little. Moreover, they are the projects that spring to mind when we seek to justify the brilliance of the open-source licensing and development models.

But if this is intended to be a list of the highest-impact and most significant open-source projects, there is a project missing from this list.

VA VistA.

VA VistA is arguably the best electronic health record (EHR) in existence. It was developed over the course of several decades by federal employees in a collaborative, open-source …

The history and accomplishments attributed to VistA, the Veterans
Administration's core administrative software, mark it as one of the
most impressive software projects in history. Still, lots of smart
people in the health care field deprecate VistA and cast doubt that it
could ever be widely adopted. Having spent some time with people on
both sides, I'll look at their arguments in this blog, and then
summarize other talks I heard today at the href="http://www.oscon.com/oscon2010">Open Source Convention
health care track.

Yesterday, as href="http://radar.oreilly.com/2010/07/day-one-of-the-health-care-it.html">I
described in my previous blog, we heard an overview of trends in
health care and its open source side in particular. Two open source
free software projects offering electronic health records were
presented, …