The best alternatives to IcePanel are Brainio, Vecta, and Mindscope. If these 3 options don't work for you, we've listed a few more alternatives below.
What do you think of IcePanel?
Notion— Get over $6,000 worth of Notion + unlimited AI, for free
Note taking and mind mapping combined in one app. Your brain works visually. And your notes can too. It works on the Web, Mac, Windows. Linux and mobile app coming soon.
Real-time collaborative online diagramming tool for teams to work better together. Less emails, more effective communication. Powered by SVG, with ability to easily create diagrams or even graphics you're proud to share!
Diagramiq is the perfect tool to capture and connect your ideas into beautiful diagrams with unbeatable speed and ease. It offers a great collection of shape libraries with virtually unlimited styling options, and with real time collaboration and integrated chat your whole team can work together on any project.
MindMup is a mind mapping application written primarily in JavaScript and designed to run in HTML5 browsers. It can also be used to create argument maps and concept maps. MindMup v1 was released under an MIT-like license with a non-compete clause that restricts use, which makes it non-free software.