AcerMC Monte Carlo Generator - The AcerMC Monte-Carlo event generator is dedicated for generation of the Standard Model background processes in pp collisions at the LHC.

CERN Computing Documentation - Provides CERNLIB documentation. Also provides tutorials, FAQs, newsletters and reference cards for a wide range of software.

cfortran.h - Interfacing C/C++ and FORTRAN - cfortran.h is a single header file that allows you to easily use fortran code in c and c++. Very useful for using HBOOK and other CERNLIB code in new c++ applications.

Fermitools - The Fermilab Software Tools Program (Fermitools) aims to provide useful tools to the community. A wide range of tools are available, and all are free.

FeynArts - Mathematica package for generation and visualization of Feynman diagrams and amplitudes.

FeynCalc - Mathematica package for algebraic calculations in elementary particle physics, focusing on Feynman diagram calculations.

FeynDiagram.com - Free C++ library for drawing Feynman diagrams. The output is in PostScript, which can be used in TeX or printed directly.

Feynmf - Drawing Feynman diagrams with LaTeX and Metafont.

FLUKA (Fluktuierende Kaskade) - A stand-alone particle physics Monte-Carlo simulation package. It is being used as a simulation tool in a number of experiments.

FreeHEP - Software and information about software which is useful in high energy physics and related fields.

HEPpc - Linux resources for high energy physics, includes low traffic mailing list.

HERWIG - A Monte Carlo package for simulating hadron emission reactions with interfering gluons. Also contains a list of some "competitor" generators.

Pandora - A physics event generator for linear collider studies. It includes beamstrahlung, initial state radiation, hadronization, and full treatment of polarization effects.

Povama - Persint OpenGL Visualization for ATLAS Muon Analysis. Software used to visualize the reconstruction of muon traces.

PYTHIA (and JETSET) - An event generator for a large number of physics processes. The site contains the latest source, the official manual and a short write-up describing PYTHIA's status with respect to the physics.

The ROOT System - An object oriented framework for large scale data analysis. ROOT is a C++ replacement of the popular PAW program developed at CERN.

StdHep - Provides a common output format for Monte Carlo events so that event generators and other simulators can easily be compared. It also provides a set of routines which convert Herwig, Jetset, Isajet, or QQ events to and from the standard HEP event format.

Texsis - TeX Macros for Physicists - This package provides a number of useful features for typesetting research papers. It is an extension to Plain Tex.