Tines is a console-based outliner/planner/notebook. It is a fork of the hnb outliner, which has not been updated in over 10 years.
The current version is 1.11.1. See the Changelog for a list of new features.
See the ROADMAP file for further planned updates along the way to version 2.0 and beyond.
The wiki has a fairly complete and updated set of documentation. The doc directory provides manpages, sample files, and general documentation.