RealLib3
axiom4sage-0.1
biopython
Cremona's database of elliptic curves
database_of_GAP_libraries_and_tables
Jones' database of number fields
Kohel's database of modular polynomials
Odlyzko's database for the Riemann zeta function
Sloane's_database_of_integer_sequences
Stein-Watkins database of elliptic curves
extra documentation (for the standard components of SAGE)
some_GAP_packages
gmpy
gnuplotpy
hermes
KANT (in linux and OSX)
lie
macaulay
mpi4py
numarray
numeric
nzmath
openmpi
polymake
quaddouble
trac