The best alternatives to TimeChi are Taskful: The Smart To-Do List, ntask, and Todoo. If these 3 options don't work for you, we've listed a few more alternatives below.
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Hurree— The smarter, simpler way to analyze your data
nTask is a free task management platform smart teams use to do more. The only online project management software that provides every tool you need to plan your next big project. Manage all your tasks, projects, meetings and more using a single agile platform that has it all.
Todoo is a task management system that helps you organize your daily todos. The core idea is to work on tasks you can complete today - tomorrow you clear your list and start again. Create todos, sub-todos, sub-sub-todos, etc. Label your todos & add reminders.
OnTrack uses keyword detection to make sure that the sites you are browsing are related to the specific subject you have selected. Multiple strictness modes are available, as well as a customized whitelist for mandatory sites to stay unblocked.