Well I was about to make one myself, but thank god I found this

Complete (almost) list of directory scripts

SolidGhost has done a great job in compliling this list of directory scripts, I was not even aware of half of the scripts on this list.

The list has been neatly done with the Script Authour Url link, the mention of the price, the installation requirements and sample sites to see the scripts in action.

The general webmaster community (the EVERYBODY wannabe directory owners) will find the list very handy to compare and make their choices.

Selecting the right directory script is very important to avoide any future grevience as migrating the existing database to another script platform can be a headache.

Have a look and make your choice :

p.s.If you know of any script that is missing in this list, please leave a comment and I would contact SolidGhost to update it as well.

List of directory scripts ~

Name: PHPLinkDirectory
URL: http://www.phplinkdirectory
Price: Free for v2, US$25 for branded version, US$75 for unbranded
Platform: PHP, MySQL
Sample Sites: Alive Directory
Comments: A very popular script with thousands of directories using both the free and the paid versions.

Name: OpenLD
URL: http://www.openld.com
Price: Free
Platform: PHP, MySQL, PostgreSQL, SQLite
Sample Sites: Auinvest Link Directory
Comments:

Name: X-Power Links II
URL: http://www.xpowerlinks.com/
Price: US$350 for 1st domain, US$150 for subsequent domains
Platform: PHP, MySQL
Sample Sites:
Comments:

Name: SkaLinks
URL: http://www.skalinks.com/
Price: Free, US$49 for unbranded version
Platform: PHP, MySQL
Sample Sites: Auto Links
Comments:

Name: SeoStart Directory Manager 4
URL: http://www.seostart.com/dirman/about/
Price: Free
Platform: PHP, MySQL
Sample Sites:
Comments: Looking for some sample sites.

Name: LinkeXchange
URL: http://www.algirdas.com/
Price: Free, US$14.95 for SE version, US$24.95 for Pro version
Platform: PHP, MySQL
Sample Sites:
Comments: If you know any directories using this script, please let us know.

Name: Safelist Directory
URL: http://www.jpesafelists.com/listdirectory/
Price: Free version, US$397 for paid version
Platform: PHP, MySQL
Sample Sites:
Comments: Doesn’t look like it is being actively developed anymore. There is supposed to be a free version available, but somehow you still need to pay for it or at least have a payment system for it.

Name: Softbiz Link Directory Script
URL: http://www.softbizscripts.com/link-directory-script-features.php
Price: US$49
Platform: PHP, MySQL
Sample Sites:
Comments: Don’t seem to be able to find a sample directory out there.

Name: Linx Lite
URL: http://www.kre8webdesign.com/linx/
Price: Free
Platform: PHP, MySQL
Sample Sites: D-Audio Resource Page
Comments: Currently still beta. Hmmm…..a lot of sample sites I found for this script is for Adult sites. Why?

Name: Directory97 PRO
URL: http://www.c97.net/product.php?p=dirpro
Price: Free, US$39 for unbranded version
Platform: PHP, MySQL
Sample Sites: Answer Dots
Comments:

Name: IndexU
URL: http://www.nicecoder.com/
Price: Free, US$99 for single domain, US$499 for unlimited domains
Platform: PHP, MySQL
Sample Sites: AToZFitness Internet Resource
Comments:

Name: PHPMyDirectory
URL: http://www.phpmydirectory.com/
Price: US$99.95 for single domain, US$189.84 for 3 domains, US$499.50 for 10 domains
Platform: PHP, MySQL
Sample Sites: Latin Dance Directory
Comments:Name: Chipmunk Directory Script
URL: http://www.chipmunk-scripts.com/page.php?ID=15
Price: Free
Platform: PHP, MySQL
Sample Sites: Art Bloggin Directory
Comments:Name: IndexScript
URL: http://www.indexscript.com/download.php
Price: Free, US$29.99 for unbranded version
Platform: PHP, MySQL
Sample Sites: Webmaster Directory
Comments:

Name: PHPDirectory
URL: http://www.phpzen.com/phpdirectory/
Price: US$37
Platform: PHP
Sample Sites: Directory Hi
Comments:

Name: PHPDirectorySource
URL: http://www.phpdirectorysource.com/
Price: Free, US$20 for unbranded version
Platform: PHP
Sample Sites: Dundee Business Directory
Comments:

Name: eSyndiCat
URL: http://www.esyndicat.com/
Price: Free, US$49 for single domain, US$89 for 2 domains, US$149 unlimited domains
Platform: PHP, MySQL
Sample Sites: 1 Link Directory
Comments:

Name: LinkUpGold
URL: http://www.phpwebscripts.com/linkupgold/
Price: US$125 for single domain, US$450 for unlimited domains
Platform: PHP, MySQL
Sample Sites: Scotland Links Directory
Comments:

Name: In-Link
URL: http://www.in-portal.net/products/in-link.html
Price: US$195, other packages available
Platform: PHP, MySQL
Sample Sites: USeek UFind
Comments:

Name: PHPLynx
URL: http://www.phplynx.com/ or http://phpLynx.com/forum/
Price:
Free version – Free
Free version with backlink removed – $30.00
30 Day Full Version Trial – $20
Full Version with Backlink(encoded) soon to be open. – $45
Attribure link removed – $30

Support is absolutely free although priority is given to paid version for obvious reasons.

No support will be given for independant mods that are made unless provided by their respective developers.

Platform: PHP, MySQL
Sample Sites: AllAboutHomes.ca

Name: Free PHP Directory Script
URL: http://www.freephpdirectoryscript.com/
Price: Free, US$49.95 for unbranded version, US$245 for paid version
Platform: PHP, MySQL
Sample Sites: PCB Directory
Comments:

Name: Site Sift Listings
URL: http://scripts.site-sift.com/
Price: Free, US$59.95 for unbranded version
Platform: PHP, MySQL
Sample Sites: Smittyz Internet Directory
Comments:

Name: eDirectory
URL: http://www.edirectory.com/
Price: US$199 + US$69/month (Basic Hosting), US$299 + US$99/month (eCommerce Hosting), US$1499 (Owned License)
Platform: No information provided
Sample Sites: Find It In Yuma
Comments: This directory is a hosted solution, which means that eDirectory will host the directory for you. You don’t need to worry about installation, all you have to do is configure your directory afterwards.

Name: WSN Links
URL: http://scripts.webmastersite.net/wsnlinks/
Price: Free Preview Edition, US$49 for WSN Links Simple, US$99 for WSB Links Full, other bulk quantity pricing available
Platform: PHP, MySQL, SQLite
Sample Sites: Octopedia Directory
Comments:

Name: K-Links Directory
URL: http://turn-k.net/k-links
Price: US$69
Platform: PHP, MySQL
Sample Sites: Dandruff Directory
Comments:

Name: XD-Link Directory
URL: http://www.myasp-net.com/
Price: Free
Platform: ASP, Access
Sample Sites: XD Link Directory
Comments:

Name: cpLinks
URL: http://www.cplinks.com/
Price: Free
Platform: PHP, MySQL
Sample Sites: Internet Resource eCommerce Directory
Comments:

Name: Dew-NewPHPLinks
URL: http://www.dew-code.com/
Price: Free
Platform: PHP, MySQL
Sample Sites: Podcast Directory & Podcast Resources
Comments:

Name: PowerSeek SQL
URL: http://www.focalmedia.net/
Price: US$399
Platform: Perl, MySQL
Sample Sites: V7N Web Directory
Comments:

Name: Gossamer Links
URL: http://www.gossamer-threads.com/scripts/links-sql/index.htm
Price: US$450
Platform: Perl, Postgres SQL, MySQL, MsSQL, Oracle
Sample Sites: All Things Kawaii
Comments:

Name: The Link SQL Script
URL: http://www.widexl.com/scripts/link-sql/index.html
Price: US$129.95
Platform: Perl, MySQL
Sample Sites: Glober Directory
Comments:

Name: qlWeb Directory Script
URL: http://www.qlweb.com/
Price: Free, US$18 for Deluxe edition, US$55 for unbranded version
Platform: PHP, MySQL
Sample Sites:
Comments: Script will be available soon. Free – 25th April 2007, Deluxe – 5th May 2007

Name: Hot Links SQL-PHP
URL: http://www.mrcgiguy.com/
Price: US$49.95
Platform: PHP, MySQL
Sample Sites: Wedding Directory
Comments:

Name: Freeglobes
URL: http://www.freeglobes.net/
Price: Free
Platform: PHP, MySQL
Sample Sites: CreativeSpirits Links
Comments: Sort of a Digg-like directory which allows users to vote on a link/social bookmark. It has a plugin system which makes it easy to add new features. French, but they have a english version too.

Name: Links Extended
URL: http://www.mycgiscripts.com/linksmod.html
Price: US$250
Platform:
Sample Sites:
Comments: Don’t think this site and the development is active anymore. Looks like this script was last updated in 2001!

Name: Barracuda TDS
URL: http://www.boonex.com/products/barracuda/
Price: Free, US$39 for unbranded version
Platform: PHP, MySQL
Sample Sites: Amateur Traveler
Comments:

Name: BosDirectory
URL: http://www.bosdev.com/bosdirectory/
Price: US$49, US$99 for unbranded version
Platform: PHP, MySQL
Sample Sites: Volvo Club Directory
Comments:

Name: aeDirectory
URL: http://www.aewebworks.com/aedirectory.htm
Price: Free, US$49 for unbranded version
Platform: PHP, MySQL
Sample Sites:
Comments: Sold to Boonex group. Now the script is called Barracuda, the details can be found above. Name: Tolra Directory Script
URL: http://www.tolranet.co.uk/software/directoryscript/
Price: €30, €75 for unbranded version
Platform: PHP, MySQL
Sample Sites: World Site Index
Comments: Name: Astanda Directory Project
URL: http://www.astanda.com/adp/
Price: Free
Platform: PHP, MySQL
Sample Sites: SEO Web Directory
Comments: Web Directory, Search Engine and spider/crawler script combined. And it comes with a powerful search algothrim.

Name: Linkmatic Web Directory
URL: http://www.getcruising.com/crypt/linkmat.html
Price: Free
Platform: Perl
Sample Sites: Sea Travel Directory
Comments:

Name: UU Free Directory Script
URL: http://www.umailcampaign.com/DirectoryScript.aspx
Price: Free, €10 to €50 for unbranded version
Platform: Asp, Access, MsSQL
Sample Sites: Tulsa Web Scene
Comments:

Name: LinksCaffePro
URL: http://gonafish.com/index.php?id=1
Price: US$149
Platform: PHP, MySQL
Sample Sites: WebSoup Resource Directory
Comments:

Name: Web Directory Pro
URL: http://scriptsfrenzy.com/webdirectory.html
Price: US$75
Platform: PHP, MySQL
Sample Sites: Free Web Directory
Comments:

Name: Comdev Links Directory
URL: http://www.comdevweb.com/linksdir.php
Price: US$69 for single domain, US$259 for 5 domains, US$399 for 10 domains
Platform: PHP, MySQL
Sample Sites: Marching Arts Directory
Comments:

Name: Link Machine
URL: http://www.linkmachine.net/
Price: Free, US$89.95 for Premium Edition, US$89.95 for SEO Upgrade
Platform: PHP
Sample Sites: Online Coffee Directory
Comments:

Name: Simple PHP Link Manager
URL: http://www.karlcore.com/cms/id/simple-php-link-manager/
Price: US$4.95
Platform: PHP, MySQL
Sample Sites:
Comments: Cannot find any sample sites.