Software
POVAMA - Persint OpenGL Visualisation for ATLAS Muon Analysis
Science, Physics, Particle, Software - Povama. Persint OpenGL Visualization for ATLAS Muon Analysis.
https://povama.sourceforge.net/
FeynDiagram - Draw Feynman Diagrams
Science, Physics, Particle, Software - FeynDiagram.com. Free C++ library for drawing Feynman diagrams.
http://feyndiagram.com/
FLUKA (Fluktuierende Kaskade)
Science, Physics, Particle, Software - FLUKA (Fluktuierende Kaskade). A stand-alone particle physics Monte-Carlo simulation package.
http://www.fluka.org
TeXsis - TeX macros for Physicists
Science, Physics, Particle, Software - Texsis - TeX Macros for Physicists. This package provides a number of useful features for typesetting research papers.
https://www.texsis.org/