7todos - A task board for indie hackers
TimeSite Pro - TimeSite Pro is a fully configurable, cloud-based time tracking, expense & invoicing solution.
Todoist - Todoist is a to-do list that helps you get organized, at work and in life.
TimeSolv - Legal Time Tracking & Billing Software.
Tasks - The new task app from the team that brought us Wunderlist, Microsoft To-Do is a great way to manage tasks. List everything you need to do—or import tasks from Outlook, Todoist, and Wunderlist so you don't have to start over.
WiseTime - Web-based automatic time tracking software