Ranked in these QuestionsQuestion Ranking
Pro Free and open source
Pro Can send a set of metrics to Slack
Metabase includes a feature called Pulses that can send a set of metrics to Slack daily.
Pro Very powerful user friendly interface
Pro SQL access for more advanced queries
Con General data tool not designed for web analytics
Generic BI data tool, is absent any necessary features required for analytics of web data. Of course it may work with captured data sets, it just doesn't do anything but data.
Con Very early in development
For instance, you can't make a stacked bar graph or edit your axis labels yet.