aliroot : ALICE simullation and reconstruction framework ( https://aliweb.cern.ch )
apfelgrid : Ultra-fast theory predictions for collider observables ( HOMEPAGE=" )
applgrid : Quickly reproduce NLO calculations with any input PDFs ( HOMEPAGE=" )
blackhat : Library for the evaluation of QCD one-loop matrix elements ( https://blackhat.hepforge.org/ )
cernlib : CERNLIB - CERN's library for data analysis ( https://cernlib.web.cern.ch/cernlib/ )
checkmate : Check Models At Terascale Energies ( https://checkmate.hepforge.org/ )
ckmutil : deal with CKM and PMNS matrices ( https://github.com/DavidMStraub/ckmutil )
cocoa : A nearly-hermetic calorimeter simulated with Geant4 and interfaced to the Pythia8 event generator. ( https://github.com/cocoa-hep/cocoa-hep/ )
coffea : Basic tools and wrappers for enabling not-too-alien syntax when running columnar Collider HEP analysis. ( HOMEPAGE=" )
colormath : ColorMath is a Mathematica package for performing color sums in SU(Nc) ( http://home.thep.lu.se/~malin/ColorMath.html )
contur : Exploring the sensitivity of unfolded collider measurements to BSM models. ( https://gitlab.com/hepcedar/contur/ )
cuttools : Computing 1-loop amplitudes at the integrand level ( https://www.ugr.es/~pittau/CutTools/ )
decaylanguage : DecayLanguage: describe, manipulate and convert particle decays ( https://github.com/scikit-hep/decaylanguage )
delphes : Delphes performs a fast multipurpose detector response simulation. ( HOMEPAGE=" )
dpmjet-III : Home of the DPMJET event generator ( HOMEPAGE=" )
dyturbo : Fast predictions for Drell-Yan processes including qt-resummation ( https://dyturbo.hepforge.org/ )
evade : Obtain constraints from vacuum stability in BSM models with many scalar fields ( HOMEPAGE=" )
fastnlo : fast pQCD calculations for hadron-induced processes ( https://fastnlpo.hepforge.org/ )
feynhiggs : Calculation of the masses, mixings and much more of the Higgs bosons in the MSSM ( https://wwwth.mpp.mpg.de/members/heinemey/feynhiggs/cFeynHiggs.html )
ff : A library for evaluating one-loop integrals ( https://www.nikhef.nl//~t68/ff/ )
flavio : flavour phenomenology in the Standard model and beyond ( https://github.com/flav-io/flavio )
fonll : FONLL Heavy Quark Production ( HOMEPAGE=" )
golem95 : performs the reduction to a certain set of basis integrals numerically ( https://golem.hepforge.org/ )
gosam : Fast predictions for Drell-Yan processes including qt-resummation ( https://dyturbo.hepforge.org/ )
hathor : HAdronic Top and Heavy quarks crOss section calculatoR ( https://www.physik.hu-berlin.de/de/pep/tools/hathor.html )
hell : A small-x resummation code ( https://www.roma1.infn.it/~bonvini/hell/ )
hellx : A small-x resummation code ( https://www.roma1.infn.it/~bonvini/hell/ )
hepi : Python interface for gluing together several HEP programs ( HOMEPAGE=" )
herwig : Herwig is a multi-purpose particle physics event generator. ( https://herwig.hepforge.org/ )
hjets : A One-Loop Matrix Element Library for Higgs Boson Production via Electroweak Couplings ( https://hjets.hepforge.org/ )
jaxodraw : Java program for drawing Feynman diagrams ( http://jaxodraw.sourceforge.net/ )
jetscape : JETSCAPE a framework for simulating all aspects of heavy-ion collisions. ( HOMEPAGE=" )
lhapdf : Les Houches Parton Density Function unified library ( https://lhapdf.hepforge.org/ )
lhapdf-sets : LHAPDF data grids ( https://lhapdf.hepforge.org/ )
looptools : Tools for evaluation of scalar and tensor one-loop integrals ( http://www.feynarts.de/looptools )
madanalysis5 : A package for event file analysis and recasting of LHC results ( HOMEPAGE=" )
madgraph5 : MadGraph5_aMC@NLO ( https://launchpad.net/mg5amcnlo )
mcfm : Monte Carlo for FeMtobarn processes ( HOMEPAGE=" )
mplhep : Histogram plots using matplotlib and HEP compatible styling ROOT. ( HOMEPAGE=" )
ninja : Integrand Reduction via Laurent Expansion method for the computation of one-loop integrals. ( https://ninja.hepforge.org/ )
njet : NJet is a library for multi-parton matrix elements up to two loops in massless QCD ( https://bitbucket.org/njet/njet )
nll-fast : Resummation for squarks and gluinos ( https://www.uni-muenster.de/Physik.TP/~akule_01/nnllfast/doku.php?id=nllfast )
nnll-fast : Resummation for squarks and gluinos ( https://www.uni-muenster.de/Physik.TP/~akule_01/nnllfast/doku.php?id=start )
oneloop : Library of one-loop scalar functions ( HOMEPAGE=" )
openloops : Evaluation of tree and one-loop matrix elements for any Standard Model. ( https://openloops.hepforge.org/index.html )
parton : parton distributions and parton luminosities ( https://github.com/DavidMStraub/parton )
photos : Monte Carlo for bremsstrahlung in the decay of particles and resonances ( HOMEPAGE=" )
pineappl-capi : PineAPPL is not an extension of APPLgrid ( https://nnpdf.github.io/pineappl/ )
pjfry : library for one-loop tensor integrals ( https://github.com/Vayu/PJFry/ )
powheg-box-v2-W : POWHEG BOX V2 W process ( http://powhegbox.mib.infn.it/ )
powheg-box-v2-Z : POWHEG BOX V2 Z process ( http://powhegbox.mib.infn.it/ )
powheg-box-v2-Zj : POWHEG BOX V2 Zj process ( http://powhegbox.mib.infn.it/ )
powheg-box-v2-dijet : POWHEG BOX V2 dijet process ( http://powhegbox.mib.infn.it/ )
powheg-box-v2-directphoton : POWHEG BOX V2 direct photon process ( http://powhegbox.mib.infn.it/ )
powheg-box-v2-hvq : POWHEG BOX V2 hvq process ( http://powhegbox.mib.infn.it/ )
powheg-box-v2-trijet : POWHEG BOX V2 trijet process ( http://powhegbox.mib.infn.it/ )
professor : A tuning tool for Monte Carlo event generators ( HOMEPAGE=" )
pyerrors : Error propagation and statistical analysis for Markov chain Monte Carlos ( HOMEPAGE=" )
pylhe : Lightweight Python interface to read Les Houches Event (LHE) files ( https://github.com/scikit-hep/pylhe )
pyslha : Parsing, manipulating, and visualising SUSY Les Houches Accord data ( https://box.insectnation.org/projects/pyslha )
pythia : Lund Monte Carlo high-energy physics event generator ( https://pythia.org/ )
qcdloop : An object-oriented one-loop scalar Feynman integrals framework ( https://qcdloop.web.cern.ch/qcdloop/ )
qcdnum : Fast QCD Evolution and Convolution ( https://www.nikhef.nl/~h24/qcdnum/QcdnumDownload.html )
rapgap : Hadron level Monte Carlo generator for ep and selected processes in pp scattering ( HOMEPAGE=" )
recola2 : Recursive Computation of 1-Loop Amplitudes. ( https://recola.gitlab.io/recola2/index.html )
recola2-SM : RECOLA2 Standard Model ( https://recola.gitlab.io/recola2/index.html )
resummino : Resummation for electroweak BSM particles. ( https://resummino.hepforge.org/ )
rivet : Rivet toolkit (Robust Independent Validation of Experiment and Theory) ( HOMEPAGE=" )
rundec : running and decoupling of the strong coupling constant and quark masses ( https://github.com/DavidMStraub/rundec-python )
samurai : Scattering AMplitudes from Unitarity-based Reduction Algorithm at the Integrand level. ( https://samurai.hepforge.org/ )
scikit-hep-testdata : A common package to provide example files for testing and developing packages against. ( https://github.com/scikit-hep/scikit-hep-testdata )
sherpa : Simulation of High-Energy Reactions of PArticles ( https://gitlab.com/sherpa-team/sherpa )
siscone : Hadron Seedless Infrared-Safe Cone jet algorithm ( https://siscone.hepforge.org/ )
slhalib : a library for SUSY Les Houches Accord I/O ( http://www.feynarts.de/slha )
smelli : running and matching beyond the Standard Model ( https://github.com/wilson-eft/wilsonHDembinski/jacobi )
smodels : A tool for interpreting simplified-model results from the LHC. ( https://github.com/SModelS/smodels )
softsusy : Calculates supersymmetric particle spectra ( HOMEPAGE=" )
tauola : Tau decay Monte Carlo generator ( http://tauolapp.web.cern.ch/tauolapp/ )
thep8i : Lund hadronisation for Herwig. Part of earlier ThePEG codes. ( https://gitlab.cern.ch/TheP8I/TheP8I )
thepeg : Toolkit for High Energy Physics Event Generation ( http://home.thep.lu.se/ThePEG/ )
topdrawer : TOPDRAWER renders top files. ( https://gitlab.com/APN-Pucky/topdrawer3 )
uproot : ROOT I/O in pure Python and Numpy. ( https://github.com/scikit-hep/uproot )
vbfnlo : A parton level Monte Carlo for processes wit electroweak bosons ( https://www.itp.kit.edu/vbfnlo/wiki/doku.php )
wilson : running and matching beyond the Standard Model ( https://github.com/wilson-eft/wilson )
xfitter : PDF fitting tool ( https://www.xfitter.org/xFitter/xFitter )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a hep-forge
For Paludis use this rsync : rsync://gentoo.zugaina.org/hep-forge-portage
If you have a problem : ycarus(-at-)zugaina.org