MembersPro PayPal
- Plug and Play membership script with support multiple levels of membership. Recurring subscriptions or one time payment. Supports PayPal payments. [Commercial]
- http://www.codefixer.com/app_mpV4_Paypal/

Member Management System
- Maintain secure customer records online, mobilize admin emailing capabilities, and limit web page views to registered members or ‘user groups’ only. By Expinion. [Commercial]
- http://www.expinion.net/software/app_mms.asp

Frontpage Asp Logon Script
- Written in ASP and designed for FrontPage users. This page also offers commercial versions of security systems in ASP.
- http://jetstat.com/asp/frontpage%5Flogon/

My ASP PayPal E-Goods Protector
- An anti-fraud ASP script to protect downloadable e-products, using PayPal's IPN technology. [Donation-ware]
- http://www.kattouf.com/mypaypalprotector/

ScriptMate Secure
- Security, news management, ad-management. [Collection, Free and Commercial]
- http://www.scriptmate.com/