Logseq
Logseq is a joyful, open-source outliner that works on top of local plain-text Markdown and Org-mode files. Use it to write, organize and share your thoughts, keep your to-do list, and build your own digital garden. Connect your ideas and thoughts with Logseq. Your knowledge graph grows just as your brain generates and connects neurons from new knowledge and ideas. Organize your tasks and projects with built-in workflow commands like now/later/done, a/b/c priorities and repeated scheduled/deadlines. Moreover, Logseq comes with powerful query system to help you get insights and build your own workflow.
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TaskPaper
Keyboard friendly. Type your lists into TaskPaper and each line is formatted into a project, task, or note. TaskPaper files are future proof. Edit them in any text editor or use one of the many TaskPaper compatible apps created by other developers. Fold, focus, and filter to cut big lists down to size. Use saved searches to quickly filter the items in your lists. TaskPaper doesn’t force a particular system on you; it provides basic list elements to use as you see fit. Go beyond with scripts and themes. Drag and drop to organize your lists, manage dates and times in plain text, active support community ready to help, fast keyboard navigation & commands, and fold, focus, and filter to make big lists small.
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Todo.txt
So many power users try dozens of complicated todo list software applications, only to go right back to their trusty todo.txt file. But it's not easy to open todo.txt, make a change, and save it—especially on your touchscreen device and at the command line. Todo.txt apps solve that problem. You're not going to find many checkboxes, drop-downs, reminders, or date pickers here. Todo.txt apps are minimal, todo.txt-focused editors which help you manage your tasks with as few keystrokes and taps possible. Countless productivity apps and sites store your tasks in their own proprietary database and file format. But you can work with your todo.txt file in every text editor ever made, regardless of operating system or vendor.
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Taskwarrior
Taskwarrior scales to fit your workflow. Use it as a simple app that captures tasks, shows you the list, and removes tasks from that list. Leverage its capabilities though, and it becomes a sophisticated data query tool that can help you stay organized, and get through your work. Taskwarrior is methodology-neutral. Whether you follow GTD, use the Pomodoro technique, or just do whatever works for you, Taskwarrior provides capabilities to help you, not restrict you. Taskwarrior is an active, vibrant project. In the last year, it has averaged 5.58 changes per day. Taskwarrior enjoys lively participation from many contributors, with currently over 60 providers of code patches. But there are even more contributors (252 of them) helping out with documentation, bugs, support, ideas, requests and extensions. It's just going to keep getting better.
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