FocusList - Daily planner & focus timer based on timeboxing and pomodoro
My Daily Planner - Organize your day with pen & paper. Free printable template.
Pomotodo - Todo-list based on Pomodoro technique.
Amazing Marvin - Customizable personal productivity tool
Aika - A simple alternative to Google Calendar for timeblocking/timeboxing.
Structured - Structured is a visual day planner, which combines calendars and to-do lists into an easy-to-use interface.