Apparently is Shinobi CE (Community Edition) which is licensed under GPLv3 but no longer maintained and Shinobi Pro (current codebase) under a “Shinobi Open Source Software License Agreement”. From what I understand though the source code is still fully available and inspectable. The Shinobi licence simply puts restrictions on it’s use (i.e. they want to monetise for commercial deployment). Quite clearly they are competing with BI as you say. They must have a unique selling point I hope … It means that only Frigate is truly open source/free software.