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
Histats - Start tracking your visitors in 1 minute!
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.
Matomo - Matomo is an open-source web analytics platform
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.