There is a
project granted credit comparison table @ boinc.netsoft-online that some people might find interesting.
Here's the first column with some other projects compared to SETI@home. The number of active hosts crunching both projects are in parentheses.
SETI@home___________1.000___(301743)
Einstein@Home________1.139___(57095)
Predictor@Home_______0.793___(1443)
climateprediction.net____0.875___(10742)
Rosetta@home_________0.925___(21723)
BURP________________0.800___(774)
PrimeGrid____________0.732___(3280)
World Community Grid__0.772___(10721)
uFluids_______________1.189___(2671)
MalariaControl_________0.782___(3061)
SIMAP_______________1.134___(4931)
Pirates@Home_________0.650___(917)
SETI@home Beta_______0.813___(1633)
RALPH@Home_________0.826___(341)
vtu@home____________0.763___(271)
TANPAKU_____________0.982___(3555)
Nano-Hive@Home______1.755___(1052)
Project Neuron________0.711___(223)
Docking@Home________1.308___(264)
proteins@home________0.800___(1189)
TMRL DRTG___________1.444___(427)
Zivis Superordenador
Ciudadano____________0.630___(348)