Histats - Start tracking your visitors in 1 minute!
Plumb5 - Plumb5 is a real-time end-to-end customer centric digital analytical & marketing automation utility system helping marketers to generate more leads using automated tools.
StatCounter - StatCounter is a simple but powerful real-time web analytics service that helps you track, analyse and understand your visitors so you can make good decisions to become more successful online.
Jaco - Watch and analyze your users’ behavior
Woopra - Track your customers' web and mobile activity, forms, emails, support tickets and more, all in one place with customer analytics. Analyze and take action.
Ahoy Ruby Gem - Analytics for Rails. Track visits and events in Ruby, JavaScript, and native apps. Data is stored in your database by default so you can easily combine it with other data.