Software
A number of programs written or maintained by the team and distributed under free licenses have their own pages.

Pari/GP
A C library and a computer algebra system designed for fast computations in number theory. 
Gnu Mpc
A C library for the arithmetic of complex numbers with arbitrarily high precision and correct rounding of the result. 
Arb
A C library for arbitraryprecision floatingpoint real and complex ball arithmetic. 
Cm
A C program for the construction of ring class fields of imaginary quadratic number fields and of elliptic curves with complex multiplication via floating point approximations. 
Cmh
A C program for the computation of Igusa class polynomials for abelian surfaces with complex multiplication via floating point approximations. 
Mpfrcx
A C library for the arithmetic of univariate polynomials over arbitrary precision real or complex numbers. 
KleinianGroups
A Magma package that computes fundamental domains of arithmetic Kleinian groups. 
AVIsogenies
A Magma package for working with abelian varieties, with a particular emphasis on explicit isogeny computation. 
Cubic
A C program (depending on the Pari library) generating equations for cubic fields of either signature and bounded discriminant. 
Euclid
A C program to compute the Euclidean minimum of a number field. It uses the Pari library. 
Apip
Another Pairing Implementation in Pari. A C library (relying on Pari) for computing cryptographic pairings on elliptic curves, notably the Weil and Tate pairings and loopshortened pairings such as ate and optimal pairings as well as their twisted versions.