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.
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.
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.
Jaco - Watch and analyze your users’ behavior
Histats - Start tracking your visitors in 1 minute!
Visitor Queue - Better identify the companies that visited your website!