Pygmy is a tiny HTTP 1.1-compliant Web server written for the purpose of embedding into applications. It implements both HTTP and HTTPS, and supports extension through a plugin architecture and flexible configuration. It can scale in functionality as needed and compress to under 40KB.
Aphid (the Apache/Perl HTTP Installation Daemon) provides a quick facility for compiling and installing the Apache Web server with support for SSL via mod_ssl, and with the embedded Perl interpreter provided by mod_perl. It downloads, compiles, and installs the software into the directory of your choice. Aphid places emphasis on providing an intuitive, browser-based interface and keeping a tiny distribution footprint. To date Aphid has been tested on Rehat Linux 6 and 6.2, FreeBSD 4.0, and Solaris 2.6 and 7.
Jellybean is a Perl Object server that allows people to write custom applications following a simple interface and framework. It's conceptually similar to Zope, but has peer communication potential. It has its own tiny Web server which serves static pages, CGIs, or transforms URIs into method calls on objects, and allows users to create their own behavior.