Dia - Dia is a GTK+ based diagram creation program for GNU/Linux, MacOS X, Unix, and Windows, and is released under the GPL license.
CEMantica - CEMantica is a journey mapping tool that enables users to understand the experience and movement of their customers throughout their visit.
draw.io - Online diagramming application
Touchpoint Dashboard - Touchpoint Dashboard is a platform that allows users to visualize and understand the customer experience in a better way.
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.
Pointillist - Pointillist is a customer journey analytics software that allows users to know about the whole experience of customers when they visited their website.