Clear Sky Institute (XEphem): http://www.clearskyinstitute.com/xephem/
The Hitchhiker home page: http://hirame.hiram.edu/~worleyam/
SAL (Scientific Applications on Linux): http://sal.kachinatech.com/index.shtml
SETI@home: http://setiathome.ssl.berkeley.edu/ The WINE Headquarters: http://www.winehq.com/