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I don't know of any program, but there is a service called http://www.watchthatpage.com/

Also, there's a WEbmon port for Linux: http://sniperbeamer.de/webmonx/

Cheers!

Coauthor of Beginning Fedora: From Novice to Professional published by Apress.

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Try Specto [http://specto.sourceforge.net] . Its a desktop application like Webmon

Firefox does RSS feeds too
[Modified by: author on March 26, 2008 08:23 PM]

I haven't looked into the other options here, but I hacked this script up for you. :) It will either display xhtml 1.0 strict compliant output, rss2 complaint output, or it will email you with a list of changes.

It's just a dirty hack right now, I'll clean it up as I've got time, but I've tested it out and it seems to be working right. You can see the main file at http://scriptsamurai.com/projects/changemon/index.phps - it uses a text file to contain the site information, and you'll need to set it up. The format is http://siteurl.com::x for every site you want to monitor. Make sure there's no newline character at the end of the file. The "x" will get replaced with an MD5 hash the next time it gets run.

Good luck! Let me know if you've got any problems with it, and any feedback is appreciated.

Edit: Just as a note, even though it's a .php extension file, most modern feed readers should let you subscribe to it - I've tested it with Liferea and it ought to work with Firefox's live bookmarks, too, but I've not tested that. Then whenever your feed reader updates, the script'll run and generate new RSS content if anything has changed.

To use the mail setup, what I'd probably do is set up a cron job to call php from the command line and log it to a file, something like '/usr/bin/php changemon.php > changemon.log' ought to work. In mail output mode the only thing that gets output is either a fail or success message, so you could just not log it, if you're not concerned with it.

And the html setting will spit out a full XHTML1.0 strict page, so it's pretty bare, but if you wanted to do that and set it as your homepage or something, I suppose you could. When I've got more time I'll clean it up and make it a deal more customizable, but I got out of classes an hour and a half early or so today so I figured I'd throw at least something up. :)

[Modified by: Horizon on April 02, 2008 11:49 PM]

Yeah, Specto's a nice app, but unfortunately the solutions posted - Webmon, Specto, etc - don't quite do what maven wants, as far as I can tell. Maven need's a way to watch pages for changes without leaving a desktop machine on all the time, something that could be run off shared hosting.

The script I posted will watch sites for changes, send email or generate an rss feed, and can be run off any host that has PHP5/Curl support. No word back if it's what they're looking for though.