Platypus - Realtime server monitoring and reporting
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.
OpsDash - All-in-one solution for monitoring servers, services, uptime and databases. Curated Dashboards. Rule-based alerting.
Histats - Start tracking your visitors in 1 minute!
Healthy Servers - Making server monitoring easy
Matomo - Matomo is an open-source web analytics platform