On my last visits to the Acid3 browser test-site, Opera 9 was my only Windows XP browser which quite smoothly ran the tests up to a score of 100.

I am now running the Opera 10 beta and have had a try at serving up my own web content.  What I get is a window on my desktop with my custom widget in it.  These had been called “Unite services” but are now called “Unite applications’.

Some of the available widgets at the Unite site do not serve to unite me with other users on the web, but are cute nonetheless.   One was a simple widget that I open from my browser menu and lets me measure pixel distances on my screen.  Widgets default to being “transparent” on the desktop, so you can devise all manner of cute non-rectangular tools.

But could it be a serious option for team collaboration in a browser-based environment?  The issue will be security and security policies.  At the moment I can open up any of my folders to be visible to the world.  Unless that can be constrained in an enterprise environment, Unite would be a non-starter.

You start by having an opera account and adding a computer or site name.  The resulting URL for your browser site might be:

http://laptop//juser//operaunite.com

In order to make my widget accessible, I added a directory.   Had I chosen an existing directory, I would still be required to set the access levels for that directory.

The up-side is that everything is URL-based: a URL for each resource.  And the only scripting done for that widget will be JavaScript.  But there is the possibility of local I/O.  Here Opera Unite has some similarity to selecting a directory in the security model of Curl.   There is another similarity to Curl in that a Curl applet which uses a View as its root, also behaves as a new window on the desktop.

For a young developer just out of college but still unemployed, this looks terrific: don’t pay for web hosting, but demonstrate your JavaScript skills on-line.  But how many job interviewers will be running Opera?

One group Unite might appeal to are amateur astronomers who possibly could share access to their remote-controlled telescopes by leaving their Opera 10 browser running with a suitable widget.

If this “let a few billion web servers bloom” appeals to you, the places to start are unite.opera.com and then http://dev.opera.com/articles/unite/

The support team at the Curl Developer Center suggests these:

AddType text/vnd.curl .curl
AddType text/vnd.curl.dcurl .dcurl
AddType text/vnd.curl.scurl .scurl
AddType text/vnd.curl.mcurl .mcurl
AddType application/vnd.curl.pcurl .pcurl
AddType application/vnd.curl.car .car

You may have to explain that these MIME types cannot affect any user who has not installed the Curl runtime on their PC.

You may have to explain that these are for Curl and have nothing to do with cURL from www.haxx.de

If your web hosting service does not provide for user-defined MIME types, there is likely no choice but to look for another service.

Remind them that you do not need access to .htaccess

Invite them to visit www.curl.com or to learn about the beginnings of Curl at M.I.T. many years ago.

Or invite them to do a Yahoo! search on RIA Curl

Expect features to appear daily because Curl is a high productvity environment.

You view the demo online or run a demo from your desktop here.

Online bookmark services do not yet seem to be the answer (and Maxthon eventually reports that I exceed their bookmarks limit) - at least not from the time I have put into Delicious and other such offering - even those revamped for Firefox.

So I will just have to try to do better with a Curl-based or a Rebol-based or an ICON-based browser (even Tcl/Tk may be in the running for this one). When I get a prototype ready, I’ll post a note. And hope that you bookmark it …

For info on Seaside, click here.

For info on Squeak Smalltalk on the iPhone, click here.