Bounding with time is very integral to the existence of the modern man as most of his tasks are set to be done by some time limit. Till the very day he enters into a school and retires from a job at his elderly age he lives within a time table where his routine activities are set with an allotted time frame to be accomplished.   In order to help you about your time tracking habits below are suggested some useful Applications to track your time.

Klok
Developed with the help of Adobe AIR, Klok is a lightweight cross-platform tracking solution. In its hierarchy of projects and sub-projects in the task-management sidebar it can keep notice of time spent over each and every project for the day.

Manic Time
Manic Time is the application that removes fear of spending too much time with a time tracking device. It actively tracks you while working on computer to make your daily work flow simpler and easier.  It uses there methods to track your time on computer comprising Activity (either computer is on or off), Applications (which are open) and Tags (personal notes to work flow).

Slim Timer
This is a web based tracking solution where after signing up a free account one can track assigned tasks.  Those tasks can be tracked by flagging time spend over a task on a little pop-out time manager. This application is provided with controls to add tags and share tasks with co-workers.

Rescue Time
Rescue Time is an easier application which needs to least interaction with application to track time for an activity. It tracks the websites and applications entered by you to track on parameters like time spent by you on certain projects and other criteria filled by you into the system. It analyzes the computer usage and present back you with the status report.

Project Hamster (Linux, Free)
For Linux based systems it is a very simple time tracking tool as soon as you enter any tasks into it starts categorize and sort them for monitoring. As soon as you are over with a given task can ask Hamster to stop tracking. It also has a reminder to tell you about activity status in prescribed number of minutes. And it can also make change into the log for your day being defined.