doto

https://github.com/gangelo/doto

doto is ruby gem that enables anyone to record, keep track of and manage their daily TODO lists. * doto uses no network connections whatsoever. * doto stores all of its data locally, in .json files. * doto is a simple (but powerful) command-line tool for users who love to work within the terminal. * doto versioning follows the semantic versioning standard (MAJOR.MINOR.PATCH).