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.
Content Marketing Playbook - Built from 12 years and 83,232,485 visits. By Hiten Shah.
Histats - Start tracking your visitors in 1 minute!
This Won't Scale by Drift - 40 free marketing playbooks to help you grow your business
Matomo - Matomo is an open-source web analytics platform
The First 100 - Proven framework for acquiring your first 100 customers