TickTick Alternatives for iPhone

Notezilla is a sticky notes app for Windows.

Remember the Milk (RTM) is an application service provider for a Web-based task- and time-management.

Toodledo is a popular and powerful online productivity tool. Manage your to-do list, take notes, track habits, and organize ideas into outlines and lists.

Things is a delightful and easy to use task manager.

A simple and friendly task manager written in Python.

OmniFocus is a personal task manager.

Yodiz is a simple but comprehensive agile tool with visual boards for Sprints, Releases, Backlog, Epics and Issue management.

Doit.im is a Cross-platform Best Online GTD Service, which can sync with Phones.

Any.do is a life management and productivity app.

Nirvana is a cloud-based task manager that isn’t just about doing more.

Org-mode is an Emacs Mode for Notes, Planning, and Authoring.

todo.txt is software and operating system agnostic; it's searchable, portable, lightweight and easily Todo management software.

2Do lets you take a completely different approach to managing your tasks. With its extremely simple-to-use interface.

Conqu is a simple yet powerful task management tool designed to help you conquer your inbox and get things done.

Nozbe is a to-do, task, project and time management application.

Clear is a tasks, reminders and To-Do lists app.