Open-source software has already shaken up the operating systems business. Now, Java server software makers are feeling the heat.

Chuck Phillips reports that the boom in application servers now raises the question of whether an entire new tier of computing infrastructure has been created.

Open-source software has already shaken up the operating systems business. Now, Java server software makers are feeling the heat. Analysts say it's difficult to measure the extent to which open ...

A Java application server runs software services for Web applications. Learn more about Java app servers, including the Java EE standards and more.

Competitive pressure from open-source software is threatening to redraw the Java application server landscape, just as it has shaken up the operating systems realm.