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A CGI testing harness that allows you to examine the exact output and environment of your CGI programs.
Price: Freeware

This free perl script prints the environmental variables and their values as returned by your server. E-vars will also test (ensuring they can be utilized) and list any modules installed on your server with links to CPANs detailed documentation. E-vars will also print the version of Perl running on your server, the operating system and all $Environmental variables returned by your server. An ideal script for webmasters who work on many different servers.
Price: Freeware

All it does is display the environment variables running on the server.
Price: Freeware

Created to help you streamline your programming and site administration tasks, Envirolyzer automatically analyzes your server and client environments including paths to perl, sendmail and qmail and returns an easy-to-read report in your web browser.
Price: Freeware

environ.cgi is a perl script which extracts information (environmental variables), from your server / browser / operating system => like for example: server ip, server name, operating system, request method, pathes and so on. this is most usefull for doing setup for scripts, maybe if you are not sure about your server pathes.
Price: Freeware

Developed to get remote web server settings to determine Document Root Path. Gathers and Returns all available information. Simple but effective.
Price: Freeware

findperl outputs information about the perl interpreters installed on the machine it is running on. It is especially useful if you have to install perl scripts on a machine you don't know yet.
Price: Freeware

Macurious Analyzie displays all important information about your server including environmental variables, the path to your Perl, PHP, Python program, available Perl modules on your server. This script can also display server hardware information such as CPU model, CPU speed and memory usage.
Price: Freeware

This is a very simple script that will give you the Path information you need to install other scripts. If your hosting company isn't giving Path information to you, simply upload this script, in ASCII mode, into your CGI-BIN directory and set permissions to 755. The Path to your home directory will be displayed.
Price: Freeware

Stop guessing what's installed on your server, and find out if the modules your Perl scripts require are actually installed on your server.
Price: Freeware