PARI/GP Development Headquarter:Main site, with downloads, documentations, CVS, mailing lists, and FAQs.
Catalogue of GP/PARI Functions: HTML documentation of functions available under the GP/PARI calculator.
Computational Number Theory: PARI-GP routines useful for number theory. Quaternion algebras; quadratic forms; Jacobians; invariants; elliptic units.
ComputeL: Pari package to compute special values of L-functions, by Tim Dokchitser.
Debian Linux Pari/GP: Binaries available for download under GPL.
Implementations of Extended LLL: In PARI/GP compiled by Wilberd van der Kallen.
libPARI: Functions and operations available in PARI and GP. Documentation of the Perl interface.
Math::Pari: Perl interface to PARI.
Pari Programs: From the Texas number theory group.
Pari Reference Cards: On the home page of Joseph Silverman.
PARI/GP: Links to resources, compiled by Karim Belabas.
Programming in Pari: Hints by Ed Schaefer.
Scripts for Pari/GP: A list of specialised number-theoretic applications.
WinCE GPARI: Builds for HPC: should also run on a PPC with the proper celib.dll installed.