Smereka is a freeform extensible database tool for personal information management, data mining, project management, collecting notes etc. It allows you to organize your data in an hierarchical, searchable database that is stored in a single file. Instantly add, view, edit, rearrange, export and import information items of 5 built-in types - text, formatted text, webpage, file attachment and folder. Plugin interface allows adding new data types, export and import operations.