Elasticode - Build, deploy & personalize native mobile experience
vym - VYM (View Your Mind) is a tool to generate and manipulate maps which show your thoughts.
Userlane - Digital adoption platform with interactive guidance for software applications allowing anyone to understand and master any software from the get-go.
Linked Ideas - A macOS/iOS apps to treat ideas as links of concepts.
Kompassify - Onboard your users and help them understand your product.
Freeplane - Freeplane is a powerful and free software for building mind maps.