Aperture is a Java framework for extracting and querying full-text content and metadata from various information systems (e.g. file systems, web sites, mail boxes) and the file formats (e.g. documents, images) occurring in these systems.
MindRaider is easy-to-use system for organizing of your resources - local files, analytical documents, images, thoughts, friends, tasks, web links, etc. MindRaider enables you to annotate these resources with metadata describing how they are related. Also