Aika - A simple alternative to Google Calendar for timeblocking/timeboxing.
Otto - Otto is a full-service advertising, web development, and public relations agency.
Pilorama - Advanced timeboxing tool
FocusList - Daily planner & focus timer based on timeboxing and pomodoro
Rooster - Local sharing community where neighbors share free resources
Pomotodo - Todo-list based on Pomodoro technique.