bhint: High-precision integrator for stellar systems
Catena: Ensemble of stars orbit integration
Double Eclipsing Binary Fitting
FITS Liberator: Image processing software
ImageHealth: Quality Assurance for Large FITS Images

ImageJ: Image processing and analysis in Java
Libimf
mkj_libs: Helper routines for plane-fitting & analysis tools
MOLSCAT: MOLecular SCATtering
Plumix: Generating mass segregated star clusters

RegiStax: Alignment, stacking and processing of images
statpl: Goodness-of-fit for power-law distributed data
STSDAS: IRAF Tools for Hubble Space Telescope data reduction
Time Utilities

On May 31, there were 447 codes in the library listed on 5 pages.

ARES: Automatic Routine for line Equivalent widths in stellar Spectra
Flexion: IDL code for calculating gravitational flexion
Fv: Interactive FITS file editor
Iris: The VAO SED Application
Mayavi2: 3D Scientific Data Visualization and Plotting

Mechanic: Numerical MPI framework for dynamical astronomy
Meudon PDR: Atomic & molecular structure of interstellar clouds
MIA+EWS: MIDI data reduction tool
p3d: General data-reduction tool for fiber-fed integral-field spectrographs
Turbospectrum: Code for spectral synthesis

VOSpec: VO Spectral Analysis Tool

On April 30, there were 436 codes in the library listed on 5 pages.

ASCfit: Automatic Stellar Coordinate Fitting Package
BUDDA: BUlge/Disk Decomposition Analysis
epsnoise: Pixel noise in ellipticity and shear measurements
EXCOP: EXtraction of COsmological Parameters
Fosite: 2D advection problem solver

GRASIL: Spectral evolution of stellar systems with dust
MC3D: Monte-Carlo 3D Radiative Transfer Code
ORSA: Orbit Reconstruction, Simulation and Analysis
PROFIT: Emission-line PROfile FITting routine
pyBLoCXS: Bayesian Low-Count X-ray Spectral analysis

Shape: A 3D Modeling Tool for Astrophysics
StarFISH: For Inferring Star-formation Histories
STOKES: Modeling Radiative Transfer and Polarization
VH-1: Multidimensional ideal compressible hydrodynamics code
VirGO: A Visual Browser for the ESO Science Archive Facility

WM-basic: Modeling atmospheres of hot stars
WOMBAT: sWift Objects for Mhd BAsed on Tvd

On March 31, there were 419 codes in the library listed on 5 pages.

AE: ACIS Extract
Astrometrica: Astrometric data reduction of CCD images
EBTEL: Enthalpy-Based Thermal Evolution of Loops
EMACSS: Evolve Me A Cluster of StarS
FERENGI: Full and Efficient Redshifting of Ensembles of Nearby Galaxy Images

Figaro: Data Reduction Software
GALAPAGOS: Galaxy Analysis over Large Areas: Parameter Assessment by GALFITting Objects from SExtractor
Gyoto: General relativitY Orbit Tracer of Observatoire de Paris
MegaLUT: Correcting ellipticity measurements of galaxies
MYRIAD: N-body code for simulations of star clusters

SALT2: Spectral Adaptive Lightcurve Template
spec2d: DEEP2 DEIMOS Spectral Pipeline
Youpi: YOUr processing PIpeline

As of February 29, there were 406 codes in the library listed on 5 pages.

Chombo: Adaptive Solutions of Partial Differential Equations
CISM_DX: Visualization and analysis tool
CoCoNuT: General relativistic hydrodynamics code with dynamical space-time evolution
CORSIKA: An Air Shower Simulation Program
CRUNCH3D: Three-dimensional compressible MHD code

FISA: Fast Integrated Spectra Analyzer
Lattimer-Swesty Equation of State Code
Mangle: Angular Mask Software
MOOG: LTE line analysis and spectrum synthesis
NOVAS: Naval Observatory Vector Astrometry Software

RADMC-3D: A multi-purpose radiative transfer tool
SME: Spectroscopy Made Easy
SPECTRE: Manipulation of single-order spectra
TALYS: Nuclear Reaction Simulator
ZODIPIC: Zodiacal Cloud Image Synthesis

On January 31, there were 391 codes in the library listed on 4 pages.

2LPTIC: 2nd-order Lagrangian Perturbation Theory Initial Conditions
CLUMPY: A code for gamma-ray signals from dark matter structures
Duchamp: A 3D source finder for spectral-line data
emGain: Determination of EM gain of CCD
ExoFit: Orbital parameters of extra-solar planets from radial velocity

FFTW: Fastest Fourier Transform in the West
Fisher4Cast: Fisher Matrix Toolbox
Hammurabi: Simulating polarized Galactic synchrotron emission
HNBody: Hierarchical N-Body Symplectic Integration Package
Inflation: Monte-Carlo Code for Slow-Roll Inflation

LumFunc: Luminosity Function Modeling
McScatter: Three-Body Scattering with Stellar Evolution
Mercury: A software package for orbital dynamics
Roche: Visualization and analysis tool for Roche-lobe grometry of evolving binaries
SeBa: Stellar and binary evolution

SPS: SPIRE Photometer Simulator
VIM: Visual Integration and Mining

Codes added in 2011