Activity Timer 3.1 is a Project Management Software product from robertinventor.com, get 5 Stars SoftSea Rating, Activity Timer is a computer activity, project or task timer. It keeps track of the time you spend at the computer on your various projects. It can also play or shows screen alarms if you want a reminder that it is time to stop work, or take a short break before you start again. The other main thing it can do is to play or show reminders to look away from the screen for a few seconds from time to time as is advised by eye doctors - this can help mitigate that tiredness of the eyes that can result from long periods of staring at a computer monitor.

Features
Activity timer automates the task of keeping track of how long you spend at the computer on various activities. You just leave it running in the task tray or minimised, and it can automatically keep track of how much time you spend using the mouse or computer on any tasks, projects or activities. It can automatically keep track when you change project, or you can quickly change task yourself by hand.

Treat as idle time whenever mouse or keyboard are idle for more than a set period of time
Auto ends the session if idle for even longer - when you leave the computer running and go away for five minutes say. Auto restarts as soon as you start to use the keyboard or mouse again.
You can set the time of day when each day rolls over to the next
You can set it to start whenever you start the computer
You can set it to run as a tray icon (in the area next to the system clock), so that you can show it any time with a right click on the icon
You can set it to pop up whenever you move the mouse into a selected corner of the screen as a quick way to show the times at any time or to change project
Year 2038 compliant - the current build of Activity Timer will work fine until the end of this century. See What is the Year 2038 problem?
Show table (csv type) with details of the hours worked for every day worked, to open in a database program.
Show a summary report of all the time spent on every project, and make a combined database showing the total time spent on all the projects for each day worked.
You can show a pie chart, bar chart or list with the total times for each project for the day, week, year, or entire project. (shareware)
You can set it to run minimized. When minimized you can see the time so far in the current session when you hover the mouse over its icon. You can also change the project or set it to working or not working with a quick right click on the icon.
You can show it's miminised icon as a pie chart for the amount of time in session so far - with complete circle set to whatever you like, preset to one hour
Flash icon or screen when time is up, or play tune
Eye protection reminders to take one or two minute eye breaks several times an hour as recommended by eye doctors. You can play a short tune for the break, or flash the icon or screen as a reminder. It's a reminder to blink to moisten the eyes, and to relax the eyes by looking into the distance, e.g. out of a window.
Easy to add new projects - just enter its name into the box and press the New Project button and it is done
Basic features are free with splash screen. Low price and more features if you pay to remove the splash.
Straight forward layout. Easy to use. Small download size.
You can translate all the text in the user interface into your own language.
More features - recently added:

Automatically switch projects when you open a document with a particular title or start a particular process (shareware)
Automatically pause when you open a document with a particular title or start a particular process (shareware)
Automatically disable all alarms when you open a document with a particular title or start a particular process e.g. when media player is running.
Show the total hours worked for each project between any dates - or the hours worked in each week during the time period. Week for the purposes of the time period can start at any day of the week. (shareware)
Show costs for the work done based on an hourly rate. You can also show a break down of the total hours for the entire period for each project, and the totals for each week. (shareware)
Option to treat short breaks or changes of project of say less than one minute as time worked on current project
Show details of when you worked on every project during the day. Also change which project any time period was recorded for - or change a recorded rest period to an active period or vice versa (modifying is shareware)
Similarly show and modify details for earlier days. (modifying is shareware)
Treat screensaver always as idle time when running even if there is mouse or keyboard activity - e.g. useful for password locked screen savers.
Random skin feature (shareware)
Click and drag number changes - click on any number in the user interface (the number itself, not the spin button next to it) and with the mouse button held down, drag up or down (out of the text field) to change the number The license of this business & finance software is Free Trial Software, the price is $16, you can free download and get a free trial before you buy. If you want to get a full or nolimited version of Activity Timer, you can buy this business & finance software.