What is Radio UserLand?
 Radio UserLand is a full Web application development and runtime environment. It puts an industrial-strength Web server on your desktop. Apps run in the browser. Server software and data are on your system. Because Radio supports XML-RPC and SOAP 1.1, you can run software that links into new distributed XML-based networks, being created by developers on all platforms, in languages such as Python, Perl, Tcl, Visual Basic, PHP and AppleScript. Even C, Java and Microsoft .NET software can wire up to the Radio desktop over the Internet. UserLand played a leading role in developing the new standards, along with Microsoft, Developmentor, Netscape and IBM.
Read more about the power of Radio in this WebReference interview with Dave Winer, the lead developer of Radio.
That's nice..
"But what does it do for me?"
Aha! That's the real question. So many neat technology-rich products show up on your desktop but don't do anything "out of the box". Not so with Radio UserLand..
 Radio comes with a built-in application that streams news from authoritative publications such as Red Herring, Wired News, Salon, CNN, Reuters, the San Jose Mercury-News, Motley Fool, Internet.Com, and from weblogs such as Tomalak's Realm, AppleSurf, Slashdot.Org, XML.Com, Freshmeat and Scripting News.
There are literally thousands of news sources that you can choose from, and a growing community of users you can learn from. Radio is a powerful XML-based news aggregator, richer than the ones on centralized servers, and it runs on your computer.
But wait, there's more!
 Radio isn't just for reading news, it's also an easy Web writing tool. If you've been using Blogger or Manila it will be familiar, and it's integrated with the news streaming feature (described above) and can sort news into categories for people in your organization and Internet-based work groups. One person can easily manage dozens of output channels with our simple checkbox-based categorization interface.
But best of all..
You have all the data
In the coming months you'll appreciate this feature more and more. Having control of your data means that you can easily switch to new services, and you can back up the data, so even if your hosting service loses your work, it's safe on your hard disk under your control.
Key Features
Thousands of news sources to choose from.
Weblog publishing via FTP or XML-RPC.
Integrated HTTP client and server, no extra software to install.
Runs on popular desktop platforms, Windows 98, NT, 2000; Macintosh OS 7.5.5 or greater.
Supports RSS 0.90 or greater, <scriptingNews> 1.0 or greater for input; RSS 0.92 for output.
Publish and subscribe for immediate notification on RSS channels.
Integrated script editing and debugging tools. Object database and content management system. Complete verb set for local operating system functionality. Multi-threaded runtime.
Integrated outliner for HTML templates, XML editing, specifications, scripts, essays. Fully compatible with Manila content management system. Native file format is OPML.
Upstreams content to a UserLand server for free storage of XML and HTML documents.
Overnight download of large music and video files, an end to click-and-wait for Internet-based multimedia.
Full offline operation, great for laptop users on the go.
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