Public accountability for academic work
You can always compare the length of publication lists, e.g., using Google Scholar, ResearchGate or even your colleagues' homepages.

Summaries of publications and their impact are (attempted to be) provided by the h-index and similar measures. (Impact factors really pertain to journals, not researchers... but indices for researchers may take into account whether the researcher publishes in a low- or high-impact journal.)

There can be, uh, lively discussions about the merits or not of such measures, especially in the context of hiring and remuneration decisions.

One problem with using such measures for short- and medium-term motivation as you propose is the lag between the work and the publication - feedback is far too slow. If you are looking for motivation, you may want to check Productivity.SE.com.