The best free alternative to XMind is FreeMind, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 100 alternatives to XMind and loads of them is free so hopefully you can find a suitable replacement. Other interesting free alternatives to XMind are Freeplane (Free, Open Source), Mindomo (Freemium), TreeSheets (Free, Open Source) and Lucidchart (Freemium).
Mind Vector is a mind mapping software, which is used for mind map, concept mapping, brainstorming, business planning and managing ideas. It is a web-based software, also available on iOS, Android and Mac.