Iris is an interface for monitoring multiple pages and RSS files for changes. You can affect keywords or regexp to each web-page to receive mail alert. Version 6.6 is a web based application. Since version 7.2 it's a Perl-gtk application
Weeblog is a minimal blog-engine based on XML/XSL requiring only CGI/Perl.
It features themeability (XSL), RSS-feed generation, html filtering in comments/submissions, user-accounts (htaccess), article comment counts and new comment indication.