W3C home > Mailing lists > Public > www-rdf-interest@w3.org > April 2001


From: Joshua Allen <joshuaa@microsoft.com>
Date: Wed, 11 Apr 2001 21:23:24 -0700
Message-ID: <4F4182C71C1FDD4BA0937A7EB7B8B4C1D157E2@red-msg-08.redmond.corp.microsoft.com>
To: "Sean B. Palmer" <sean@mysterylights.com>, "Dan Connolly" <connolly@w3.org>, "Aaron Swartz" <aswartz@swartzfam.com>
Cc: "Mark Nottingham" <mnot@akamai.com>, "RDF Interest" <www-rdf-interest@w3.org>, <uri@w3.org>
This is also similar to the facility in IE of "pluggable protocol
handlers"; for example, if you install Napster on your machine,
nap:search?artist=Goodie+Mob&title=Soul+Food becomes a usable URI.  In
this case the link causes Napster to load with a list of all nearby
locations for that song.  Sean makes a good point -- it is crass to make
a new scheme for something that is already supported by an existing
scheme like http:// or news://.  For implementing in IE, see
And sample code at

-----Original Message-----
From: Sean B. Palmer [mailto:sean@mysterylights.com] 
Sent: Wednesday, April 11, 2001 7:43 PM
To: Dan Connolly; Aaron Swartz
Cc: Mark Nottingham; RDF Interest; uri@w3.org
Subject: Re: URIs / URLs

Dan Connolly <mailto:connolly@w3.org> wrote:-

> I hear there's something related called protozilla, but I
> don't know the details.

Protozilla [1] is a plug-in (not strictly... I think they call it a
socket adaptor or something) for Netscape6 that allows one to
associate certain protocols with a particular action on ones computer:
just what you've been looking for, according to:-

The two on my personal to-do list are mid: and irc:.
]]] - http://www.w3.org/Addressing/schemes

More information about Protozilla is available from [1] which I have
pointed out numerous times before after being introduced to it by
Aaron (who will almost certainly have sent a similar letter to this by
the time I'm through writing). Downloads [2] and examples [3] are also
available. Protozilla also carries with it certain disadvantages: it
makes it way too easy for people to start using URI schemes as
redirects, e.g. myscheme:ABC could be used to reference
http://www.example.org/example/ABC - I can see some of the Wiki people
starting to use wiki: already :-)

[1] http://protozilla.mozdev.org/
[2] http://protozilla.mozdev.org/download.html
[3] http://protozilla.mozdev.org/examples.html

Kindest Regards,
Sean B. Palmer
@prefix : <http://webns.net/roughterms/> .
:Sean :hasHomepage <http://purl.org/net/sbp/> .
Received on Thursday, 12 April 2001 00:45:09 UTC

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