Ee is the categorizing information manager for Emacs. It works by collecting information from different sources and converting information to a relational or associative database. It uses the fields of database table records to build the category trees, which are displayed in the Emacs view buffer. The rules for creating the views are also specified by similar data structures and include the rules for building category paths, sorting records and categories, calculating the totals of category fields, filtering records, and printing category tree and record lines.
Очень мило выглядит история внизу: выпуск версии 0.0.1, потом 0.0.2... И на этом история заканчивается.