My Daily Planner - Organize your day with pen & paper. Free printable template.
Aika - A simple alternative to Google Calendar for timeblocking/timeboxing.
Amazing Marvin - Customizable personal productivity tool
Zonebox - Get more done by timeboxing your tasks
FocusList - Daily planner & focus timer based on timeboxing and pomodoro
Is Invisible - Hard to find, beautifully designed products