TeamWork.com vs Producteev

Tasks are grouped in task lists and can have subtasks. Each task list can be assigned to a particular set of users, aligned with a milestone and have notes. Each task in the task list can have a description, a start and a due date, attachments, priority, manually set progress, followers, dependencies, be assigned to a particular set of users and set to repeat. Each subtask has the same configurable properties except instead of the ability to assign people, subtasks can be commented on.

It's possible to limit projects only to the necessary features so that unnecessary functionality doesn't get in the way and clutter up the interface.

Gantt charts, calendar and an easy overview of huge amount tasks.

This helps separate personal tasks from work tasks and makes it easy to differentiate between projects/contexts.

The free version includes lots of features other services charge for (attached files and more).

You can set a single task to have more than one reminder.

It doesn’t take many clicks to access all of the features.

Tasks can be assigned to specific individuals, or you can add followers. All people involved will receive notifications. The project can be shared with the full company or within selected subgroups.

Some apps (Basecamp, Asana) don't have this.

There are dedicated apps for almost every platform.