The next generation of MindMup - a zero-friction, collaborative, free online mindmapping tool.  MindMup 2.0 brings much better Google Drive/Google apps integration. Here are the highlights:

- Support for typical Google Drive workflows - rename and change folders from the app, or create a map inside a folder to inherit sharing permissions so you can manage maps easier
- Screen layout and options organised similar to other Google Drive apps so you can get started easier
- Support for multiple Google accounts logged on at the same time
- Show previews in Drive, so you can share and discover maps easier
- Attach files from Google Drive to map nodes
- Add images from Google Photos to map nodes
- Argument visualisation, productivity mode and several visual themes

"If you are looking to create a mind-map online, MindMup is the app I would recommend the most. MindMup is the sort of app everyone dreams of finding online. It’s open-source, free and integrated with all the best tools. It’s also designed by people who use the app, so it’s efficient and effective. And unlike so much free software, it looks great too." - MakeUseOf (http://www.makeuseof.com/tag/try-mindmup-mind-mapping-via-google-drive/) 

"MindMup is super-simple, lightweight, and generally a joy to use." - PC World (http://www.pcworld.com/article/2032818/review-mindmup-is-a-free-effortless-way-to-create-mind-maps-in-moments.html) 

"What I like about Mindmup is that it is clean and simple. As they describe, it allows for frictionless capture of ideas and projects. It is not bloated with unneeded features. The UI stays out of your way and lets you get your ideas out." - Time Management Ninja (http://timemanagementninja.com/links/app-of-the-week-mindmup/) 

"If you like to plan and brainstorm by creating mind maps to link together ideas, MindMup is a great browser-based program that helps you get organized with lots of features." - LifeHacker (http://lifehacker.com/mindmup-maps-your-brain-in-the-browser-614853279)

"Starting to map with MindMup is easy – their motto of “Zero-friction free online mind mapping” is one that its designers have taken seriously. " - MindMapping.org (http://www.mind-mapping.org/blog/2013/11/mindmup-browser-based-free-easy-and-open-source/)

" MindMup is a great web app for creating mind maps quickly and easily. It is 100% free, and integrates directly with Google Drive." - iSimplify (http://isimplify.com.au/mindmup/)

"10/10: The MindMup app is a great tool to create, edit, save, share and embed mind maps. Any user can easily make use of this amazing tool that offers a friendly interface and high-level performance." - Dr Prem (http://drprem.com/review/create-mind-map-mindmup-review)