What programs or web services exist to measure performance?

Question

Time Management

At one of the past works, some service was used for some time (there was a web interface and a client that was installed on a PC), which measured how much time per day / week / month it took to use certain software and sites, displayed statistics , and on the basis of this calculated the efficiency of spending working time.
Now I wanted to try to use this tool to increase my personal work efficiency, but attempts to remember its name did not lead to success, and I can’t even guess how to formulate a query in Google (I don’t know what this class of programs is called correctly).
Please tell me its name, or better still some analogues, if any. (Especially the free/inexpensive ones, because, as far as I remember, the "original" had a paid subscription, and, it seems,