You can BUY the following items for Zeppelin:
Sources (changes.log) and Smalltalk Debugger: (1)
“Consulting Room”:
Demo of the 3 Worlds (custom)
KPIs creation workshop using IHDSL
Course “How to develop a new interface”
(1) Improvekit keep the rights and you can only use it to extend Zeppelinbuy coaching related to Zeppelin app, see please here