Dia - Dia is a GTK+ based diagram creation program for GNU/Linux, MacOS X, Unix, and Windows, and is released under the GPL license.
EasySend - EasySend is an advanced-level customer relationship management platform that helps you to digitalize the customer journey of your business without the implementation of any coding language.
draw.io - Online diagramming application
InMoment - Experience Management
yEd - yEd is a free desktop application to quickly create, import, edit, and automatically arrange diagrams. It runs on Windows, Mac OS X, and Unix/Linux.
SuiteCX - Customer Experience Mapping Solutions