Please note the "PLUS" button to open or close more content.
This is from one of the MindMapping apps. It looks kind of like an old version of MindJet's MindManager, or modern output from Freemind, but could be a couple of others. A few of them can be configured to make this kind of look.
Search for Mind Mapping apps in Google.
Freemind is free, open source.
MindJet MindManager is the market dominator.
After a quick look, I'm pretty sure that image was done in MindMeister. Here's some output from it on their marketing page: