Apache Kafka - Apache Kafka is an open-source message broker project developed by the Apache Software Foundation written in Scala.
Histats - Start tracking your visitors in 1 minute!
RabbitMQ - RabbitMQ is an open source message broker software.
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.
Apache ActiveMQ - Apache ActiveMQ is an open source messaging and integration patterns server.
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.