Apps similar to Task Office: to-do, calendar include Todoist, which has a free version. Other options are Workflowy, Quire, Microsoft To Do and Remember The Milk. There's no shortage of Todo List Managers like Task Office: to-do, calendar, with more than 100 alternatives for iPhone, the web, Android, Mac and iPad.
ThinkingRock open source and multi-platform software for Getting Things Done - the stress-free productivity methodology and international best selling book by David Allan. [ http://en.wikipedia.org/wiki/Getting_Things_Done ]
Todo.ly is an intuitive and easy to use online Todo list, and Task Manager. It helps you to get organized, simplify your life, and to get things done. Create todo lists, and manage them online from anywhere.
Hungary
EU
'Do It Tomorrow' is a Windows desktop application which helps you to track, organize, reuse, export, print, and summarize your tasks.
Taskfabric is the task manager built for you and your team! Use it on all your devices and desktop platforms, in your web browser and more.
United Kingdom
To-do list maker. Make your Priority to-do list. Put your random thoughts in Laterbox. At the end of the day check how many important works you have done.
Simple way to manage your todo list in AJAX style. Written in PHP and jQuery. Data stored in SQLite or MySQL database. Distributed under the GNU GPL License.
Features
Multiple lists Task notes Tags (and tag cloud) Due dates (input format: y-m-d, m/d/y, d.m.y, m/d, d.m) Priorit.
Russia
Free and easy-to-use web-based task management platform enables you to be more efficient. Create tasks and follow progress, view reports, create notes, all in a seamless workflow. Actionmint helps you to be more organized and productive.
CroatiaEU
Hitask is the project planner for getting tasks done. Assign, prioritize, and remind tasks to your team with lists. Check progress of each project on the go and see what your organization is working at.
United States
KOI (Kommunikation, Organisation, Information) is a cloud based task, document and process management software. KOI stores all your ideas, projects, tasks and documents in the cloud. The KOI Desktop App based on the Eclipse RCP uses most of the features of the platform including...
TaskLite is built from the ground up to be a command line task manager. It's functionality is similar to Taskwarrior but with a simpler codebase, reduced complexity, faster performance, and more active development.
GermanyEU
NoteAway is the simplest, most convenient way to take quick notes on OS X. NoteAway has lots of powerful features for free, like iCloud syncing, rich text, attachments, simple import/export, and a variety of customizable options.
United States
Todo-list based on Pomodoro technique. Supports some additional features for tasks such as pinning tasks, hashtags, priorities. Useful statistics and history features for made pomodoros and tasks are also available. Free with minor limitations.
China
