ITMZ file extension is associated with IThoughtX and IthoughtHD software. ITMZ files store mind maps created by users. ITMZ files are very popular among Mac desktop users.

ITMZ are also compatible with mobile devices running Apple iOS. Mind-mapping is a process of developing creative ideas and brainstorming at the early stages of project development whereby individuals or groups exchange and iterate on ideas by graphically mapping fought processes.