BigTracker

BigTracker is a provider of real-time website analytics via useful statistics, measurements and reports.

Price range: < $10 / month

Offers:
1. Multipage tracking by IP. Referring URL.
2. The Search Engine Key Words that got them to your site.
3. Unique visitors and Hits by hour, day, week and month.
4. Visitor's browser, OS, monitor resolution and color depth.
5. Plus hundreds of additional invaluable statistics.
6. Every BigTracker account helps support Code Amber - The Web's Amber Alert System.

UPDATE

Neither the service nor the website are available.