Java-based, semantic, XML repository for thoughts and files
Store can contain concept map with embedded text editor or pointers to files and URIs.
Alpha-blending overlay or traditional window presentation. (Transparency or drawn on background)
Indexed search and statistical usage tracking with data visualization. (Fast search and info graphs about which concepts you work on)
Commercial (Free with limited functionality)
Upon install, all features of the software are available for your trial.
After 30 days, all content created with advanced features remains accessible indefinitely. Some advanced features are disabled and may be restored at any time by purchasing a license.
For a comparison matrix of features supported by each license, see http://www.thebrain.com/store/version-details/