A topsites list ranks a group of related sites by popularity. Webmasters join the topsites list and are given a button to put on their site and link back to the topsites list.
Stats
Counts pageviews, hits in, and hits out
Stats for individual members and overall stats for the entire list are easily accessible
Security
Robust anti-cheating protection
A security […]

Simple Guestbook with multi language support (language choosable by URL)
supports multiple data source (MySQL or CSV - text file)
supports several guestbooks at same time
Image-CAPTCHA Schutz gegen SPAM
optional spam protection (using formmailer)
permission mode
smileys
filter against SPAM
ICQ status
e-mail notification when a user signs in
automatical recognition of browser language
time zone conversion
administration frontend with update information
Download it HERE

Phplist is a one-way email announcement delivery system. It is great for newsletters, publicity lists, notifications, and many other uses.
(It is different from group mailing list systems like mailman.)
The Web Interface lets you write and send messages, and manage phplist over the internet.
Download it HERE