Hosted Scripts 
Scripts that can be used on websites but are hosted on other websites.
Provides a free guestbook for a website or blog. Easy setup, spam filters, and plenty of customizable features.
http://www.anvilbook.com/
A simple way to play flash arcade games online. Provides HTML codes to add games to a website, blog or online community.
http://www.flashgamecodes.com/
3. HitsLog
Free service of website statistics and traffic analysis. HTML code snippet for web page counter provided.
http://www.hitslog.com/
Provides a code to show how many visitors are currently viewing a website. Fast, easy to set up, and no membership required. Available in 8 languages (English, French, German, Spanish, Turkish, Russian, Chinese and Japanese).
http://www.myonlineusers.com/