Curses front-end for Remind written in OCaml with vertically scrollable time table.

A comand line interface to manage hierarchical todos. Each task has a title, a long text description, a deadline (tudu warns you when the date is close), and a scheduled date. There are categories and priorities.

A minimal clone of Wunderlist, with 30% of its features. GTD oriented. It stores the task list in a hidden JSON file in the home directory, making it easy to backup or share them.

Minimalistic todo manager that uses a simple plain text file to keep track of items; implemented as a shell script.

Todo manager with advanced features; dedicated synchronization server available; many plugins and related tools; healthy software project.

Calendar program for Unix/Linux systems that can keep track of events; custom, plain text storage format; interesting and fully functional.

Project-based todo manager: every task must be specified with a mandatory project indication. Tasks are stored within a SQLlite DB. Written in Python.

A fully-featured task manager encapsulated within a Python script (just carry around the script to retain all the TODOs). When the script is run, a Python shell is opened, where task-related commands can be entered (ADD, LIST, etc.); a pity that commands are uppercase, which requires the annoying use of the Shift key.

Console carddav client written in Python.

"ppl is free software made out of other free software. It is built on top of Ruby and Git, and the completely free vcard address book format."

CLI and terminal calendar program, able to synchronize with CalDAV servers through vdirsyncer.

CLI program to access Google Calendars; allows to do the main tasks: create, delete, and list events.

Darwin Mail - Inbox evolved: reach new levels of productivity.

Stretched for time, some households are starting to operate more like businesses.

Rolo keeps track of your contacts and display them to you with a text-based menu.

Rolo strives to be a well-constructed tool for complimenting text-based email programs-such as mutt. It utilizes the vCard version 3.0 format for storing its contacts and it interfaces with the end-user through a NCurses front-end.

Calendar program for Unix/Linux systems that can keep track of events; custom, plain text storage format; interesting and fully functional.

Taskwarrior is an open-source cross platform command-line task management tool. It allows you to capture, annotate, manipulate and present your tasks, then sync them among devices.

Org mode is for keeping notes, maintaining TODO lists, planning projects, and authoring documents with a fast and effective plain-text system.

Super-powerful Emacs plugin to manage outlines with associated timestamps, priorities, labels, etc.; available views grouped by time (agenda), tags, etc.; plain text storage format.