ToDoList Alternatives for Mac OS X

Task Coach is a free and open-source personal task manager designed to handle compound tasks and notes. It's a versatile tool for organizing your to-do list with support for subtasks, categories, and tracking time spent on tasks, making it suitable for both simple task management and more complex project organization.

NixNote is an open-source, cross-platform desktop client for Evernote, offering a familiar interface and offline access to your notes.

Notational Velocity is a minimalist, keyboard-centric note-taking application for macOS.

Org-mode is a powerful and flexible mode for GNU Emacs, designed for note-taking, project planning, to-do list management, and authoring documents. It utilizes simple plain text files with intuitive markup.

WizNote is a feature-rich, cross-platform cloud-based note-taking application designed for individuals and teams. It offers robust tools for capturing, organizing, and sharing information, with a strong focus on productivity and knowledge management.

Todo.txt is a simple yet powerful command-line task management system. It leverages a plain text file to store your to-do list, making it highly portable, easily searchable, and compatible with numerous tools and operating systems. Its minimalism offers a clean separation from complex feature sets, focusing purely on task management.

Piggydb is an open-source web notebook application designed for building and managing knowledge bases, either individually or collaboratively. It emphasizes structured organization through hierarchical tagging and concept mapping.

2Do is a powerful and flexible task management application offering a unique approach to organizing your life. With a focus on simplicity and customization, it provides tools for everything from quick notes to complex project management.

Taskwarrior is a powerful, open-source command-line task management tool designed for serious productivity enthusiasts. It provides a highly configurable and efficient way to track, prioritize, and manage your tasks directly from the terminal, supporting complex workflows like GTD.

TaskPaper is a distinctive plain text based task management application designed for simplicity and flexibility. It leverages the power of outlines and plain text formatting to help users organize tasks, projects, and notes efficiently.

Zoho Notebook is a free, feature-rich note-taking application designed for diverse needs, offering a balance of simplicity and power. It stands out with its visually appealing interface, robust organization tools, and seamless cross-platform synchronization, making it suitable for personal organization, professional collaboration, and creative endeavors.

GTDNext is a web-based task management application designed for individuals and teams, focusing on the Getting Things Done (GTD) methodology. It offers a unique hierarchical structure, allowing users to break down complex projects into manageable steps, and includes features like recurring tasks, dependencies, and integrations to streamline workflows.

Nitro was a free, open-source task management application designed to help users organize their daily tasks and boost productivity. It featured a clean interface and supported various integrations for a streamlined workflow.

Quiver is a robust note-taking application designed for developers, offering a powerful and flexible platform for organizing, writing, and managing notes. It seamlessly integrates rich text, code snippets, markdown, and LaTeX within a single note, providing a unique blend of capabilities for technical users.

Conqu is a versatile task management application designed to help users organize their tasks, projects, and notes effectively. It offers a robust feature set including cloud sync, hierarchical task structures, integrations with popular services, and tools for both individual productivity and team collaboration.

Nozbe is a robust task and project management application designed to help individuals and teams implement the Getting Things Done (GTD) methodology for enhanced productivity and collaboration. It offers a flexible environment for managing tasks, projects, and time effectively.