The Deutsche Borse Group manages the International Securities Exchange, an equity options exchange, in New York and the Eurex and Deutsche Borse's own Xetra cash exchange. The Xetra stock exchange platform is also used by the Irish Stock Exchange, the European Energy Exchange, and the Shanghai Stock Exchange among others. It's long used Linux as the basis of these high-speed stock exchanges.

Google has announced the next major update for it's open source Android mobile operating system, adding support for a number of new features, including Wi-Fi tethering, Exchange updates and a new Dalvik JIT compiler that provides a 2 to 5 times improvement in overall performance

Looking for a Linux-friendly groupware suite that can take the place of Microsoft Exchange in your organization? You'll find a wide range of alternatives for Linux that offer most (if not all) of Exchange's functionality.

After conducting an evaluation of alternatives, [a] hospital [in Scranton, Pa.] decided not to upgrade to a newer version of Exchange. Instead, it went with a Linux-based Exchange clone that it felt could meet the needs of its 700 users without forcing them and IT to learn a whole new system.

The messaging and groupware landscape has altered significantly in the last few years with, like it or loathe it, Microsoft’s Exchange Server now firmly ensconced as the number one solution regardless of customer size or industry sector. There are alternatives, of course, but rival developers have more or less given up on trying to beat Microsoft at (what’s now) it’s own game.

Launched in 2007, Red Hat Exchange sounded promising. But over time, Red Hat gradually rethought the online marketplace. Visit the original site now (http://rhx.redhat.com) and Red Hat Exchange seems non-responsive. Does it still exist? Here are thoughts from The VAR Guy.

Open source Exchange rival Zarafa has added native support for Blackberry Enterprise Server to a roster of collaboration features that already includes Outlook interoperability, and integration with open source tools such as SugarCRM, OpenERP and Alfresco.

Microsoft Exchange is the name most organisations go for when thinking of sharing calendars, e-mail etc. However, there are free software alternatives—and of course you don’t have to go for the obvious or popular option.

«... In the terminology of computer hackers (read this article, MIT-style hackers, not information security “crackers”), the ability to exchange data without being encumbered is known as the “free exchange of information.” MIT-style hackers are intellectuals and experimenters.