If you need an app to help you brainstorm and share ideas with others, GitMind is a good option. It's a free AI-assisted mind mapping and brainstorming tool with real-time collaboration and a range of visual tools like mind maps, flowcharts and UML diagrams. Its collaborative mind mapping, AI-assisted input and feedback features make it good for students, professionals and teams.
Another option is Seenapse, which marries human creativity with AI to produce hundreds of ideas in a hurry. It supports more than 40 languages and can be linked to Google Docs for collaboration. It's good for brainstorming and teams that need new ideas, with different pricing levels to match different needs.
TreeMind is a full-featured tool for brainstorming and creative planning. It offers a range of diagram types, including AI-assisted mind maps, real-time collaboration and lots of customization options. With flexible pricing, it's good for individuals and teams that need powerful collaboration abilities.