As it can be understood from the name Mindmup is an web-based app to create a mind map. What is mind map? It is a diagram used to visually organize information.(Wikipedia)
In Mindmup you can add images and videos in your mind map but you cant share it unless you pay for it.
Here is my example of Mindmup.
TEXT 2 MIND MAP
Text 2 Mind map is a tool for creating Mind maps. Unlike Mindmup, you can just write text and cant add images and videos.
Here is my example for Text 2 Mind Map.
You can create word trees by using Popplet and add some images on it, you can even draw something.
At down below you can see my example.
PicLits is an educational e-learning web site that uses words and photographs to inspire users to write, express themselves, and share their work with others.
You can choose any image you want from the gallery. And drag the words related with the image.