Bubbl.us (Web, iOS) Web-based with nothing to download. Save your mind map as an image. Share and collaborate with others. One click presentation. Colourful and engaging. It's a visual thinking tool for structuring information, helping you to better understand, remember and generate new ideas.
Coggle (Web, added to Google Drive as a connected app) Coggle is an online tool for creating and sharing mindmaps. It works online in your browser: there's nothing to download or install. Whether you're taking notes, brainstorming, planning, or doing something awesomely creative, it is very simple to visualise your ideas with Coggle. Share with as many friends or colleagues as you like. Changes you make will show up instantly in their browser, wherever they are in the world.
Popplet (Web, iOS) Very simple, basic mind-mapping tool, that allows users to build rich, multimedia mind maps. Popplets’ maps are comprised of “popples,” bubbles that contain some kind of content and are linked together. Popples can contain text, uploaded images, hand-drawn sketches, and even embedded videos, which you can search for without ever leaving the site.
Sketchboard (Web, iOS, or as a connected app in Google Drive) Creative team sketching and diagramming on an endless online whiteboard, which feel like you’re working on paper, but better, because it’s all saved in the cloud. Sketchboard is integrated with Google Drive, so you can open a sketch from right inside your Drive, then go back into it later and edit it.