[nl]

I looked pretty hard at Zeppelin around 6 months ago, comparing it to iPython/Jupyter for use with Spark.

I found Zeppelin hard to install (I'm a Java programmer and Zeppelin is in Scala/Java so I expected the opposite). It was also extremely buggy.

Jupyter OTOH worked straight away, and even getting Spark integration working was straight forward compared to getting Zeppelin just working.

Zeppelin looks nicer, and some of the features look great. It just isn't there for production use atm though.