Tracks is a web-based application to help you implement David Allen's Getting Things Done™ methodology. It was built using Ruby on Rails, and comes with a built-in webserver (WEBrick), so that you can run it on your own computer if you like. It can be run on any platform on which Ruby can be installed, including Mac OS X, Windows XP and Linux. Tracks is Open Source, free and licensed under the GNU GPL.
EmailFuture.com is a free way to send yourself emails in the future. Whether it's a reminder email in half an hour or a message to your future self in 10 years.
Your life is complicated enough as it is. The tool to manage your life shouldn't be. The Hit List keeps things simple by not forcing you to learn a system. It can be as simple as just keeping a list of things to do as you would on a piece of paper. However, if you do have a task management system such as Getting Things Done by David Allen, The Hit List is flexible enough to support you.
The fun, easy way to get stuff done. Every day we'll email you to ask, "What'd you get done today?" Just reply to our email to make an entry. We'll keep a calendar for you of what you got done. Look to your streak from yesterday to motivate you today.
Trello is a collaboration tool that organizes your projects into boards. In one glance, Trello tells you what's being worked on, who's working on what, and where something is in a process.
The simple and intuitive ccToDo app provides to do list, task management and cloud synchronization to help you stay ahead of your schedule - without that nagging feeling of having forgotten something.
"Joplin is a free, open source note taking and to-do application, which can handle a large number of notes organised into notebooks. The notes are searchable, can be copied, tagged and modified either from the applications directly or from your own text editor. The notes are in Markdown format."