Review on Guavus SQLstream by Dustin Gabrielle

This is my favorite tool for real time data stream analysis/ processing because of its simplicity to use with minimal setup required along with it's seamless plug in features with other tools like Kibana or dashboards from Grafana.

It has very good documentation which helps you get started quickly! I have used this mainly as an ETL solution but can be considered to do full stack analytics platform if needed - where one could easily connect any type of data source using connectors available with it. Streams all your logs into Elasticsearch & visualize them later without much effort at backend end.