Features

Invocation

PHP API - invoke OWA from within your PHP application. This allows for an easy way to build web analysis right into your application logic.
JavaScript Tag - invoke OWA from JavaScript. This allows for remote logging and integration with non PHP based applications .
WordPress v2.x plugin - full featured WordPress plugin seamlessly integrates OWA with the WordPress publishing platform and administration interface
MediaWiki plugin - provides tracking of MediaWiki articles and special pages.

Track Page views, visits, and unique visitors over time
Track unique, new, repeat visitors over time
Multiple Web Site Support - track any number of web sites and view statistics in aggregate or by site
Click-streams - view the actual click-stream of each visitor
Click Tracking - Track where exactly on a web page users are clicking and view clicks by browser type
Click Heat Maps - view a heat map of where users are clicking on your web pages
Google Maps - map your visitors on Google Maps
Google Earth (KML) - view your visitors in Google Earth via a KML file export
RSS/ATOM subscription tracking - track unique feed readers, reader types, and feed requests
Visitor Aging - understand the age of your repeat visitors.
Canned and Custom Time Periods - generate reports using predefined reporting periods or custom date ranges
Referring Page Analysis - View the title, anchor text, and surrounding text of inbound links from referring web pages
View visits by user agent
Track entry and exit pages
Track pages by custom page types

Full MVC based framework
Module framework allows developers to extend OWA's entities, events, reports, and graphs without modifying the base components.
Plugin framework for authentication, database access objects, data validation, and geo-location
Object Relational Mapping layer
Lite templating layer
Event handlers

Events can be written to the database asynchronously.
OWA to can run on multiple front end web servers and write to a remote database.
Event Logging and admin/reporting user interface can run on the same or separate servers.

Track visitors by WordPress user name or e-mail address they use in comments.
Track all Wordpress Page Types (Posts, Pages, Authors, Archives, Categories, etc.)
Track the number of comments made by visit
Reporting accessable via Admin Dashboard
Track subscribers to RSS/Atom feeds