Twenty codes were added to the ASCL in July 2016:

AGNfitter: SED-fitting code for AGN and galaxies from a MCMC approach
astLib: Tools for research astronomers
Atlas2bgeneral: Two-body resonance calculator
Atlas3bgeneral: Three-body resonance calculator
BLS: Box-fitting Least Squares

BoxRemap: Volume and local structure preserving mapping of periodic boxes
Cholla: 3D GPU-based hydrodynamics code for astrophysical simulation
DICE: Disk Initial Conditions Environment
HfS: Hyperfine Structure fitting tool
HIDE: HI Data Emulator

JUDE: An Utraviolet Imaging Telescope pipeline
K2PS: K2 Planet search
Kālī: Time series data modeler
LZIFU: IDL emission line fitting pipeline for integral field spectroscopy data
PICsar: Particle in cell pulsar magnetosphere simulator

Planetary3br: Three massive body resonance calculator
RT1D: 1D code for Rayleigh-Taylor instability
SEEK: Signal Extraction and Emission Kartographer
SOPIE: Sequential Off-Pulse Interval Estimation
ZASPE: Zonal Atmospheric Stellar Parameters Estimator

Fifteen codes were added to the ASCL in June 2016:

COMB: Compact embedded object simulations
Companion-Finder: Planets and binary companions in time series spectra
Cygrid: Cython-powered convolution-based gridding module for Python
FDIPS: Finite Difference Iterative Potential-field Solver
FLASK: Full-sky Lognormal Astro-fields Simulation Kit

HIBAYES: Global 21-cm Bayesian Monte-Carlo Model Fitting
KMDWARFPARAM: Parameters estimator for K and M dwarf stars
Lmfit: Non-Linear Least-Square Minimization and Curve-Fitting for Python
PAL: Positional Astronomy Library
Pulse Portraiture: Pulsar timing

PyMultiNest: Python interface for MultiNest
s2: Object oriented wrapper for functions on the sphere
SimpLens: Interactive gravitational lensing simulator
SWOC: Spectral Wavelength Optimization Code
uvmcmcfit: Parametric models to interferometric data fitter

Eighteen codes were added to the ASCL in March, 2016:

Asfgrid: Asteroseismic parameters for a star
CORBITS: Efficient Geometric Probabilities of Multi-Transiting Exoplanetary Systems
Dedalus: Flexible framework for spectrally solving differential equations
DiskJockey: Protoplanetary disk modeling for dynamical mass derivation
ellc: Light curve model for eclipsing binary stars and transiting exoplanets

EQUIB: Atomic level populations and line emissivities calculator
ExoPriors: Accounting for observational bias of transiting exoplanets
FAST-PT: Convolution integrals in cosmological perturbation theory calculator
fibmeasure: Python/Cython module to find the center of back-illuminated optical fibers in metrology images
gPhoton: Time-tagged GALEX photon events analysis tools

HIIexplorer: Detect and extract integrated spectra of HII regions
PyGSM: Python interface to the Global Sky Model
PolRadTran: Polarized Radiative Transfer Model Distribution
ROBAST: ROOT-based ray-tracing library for cosmic-ray telescopes
SILSS: SPHERE/IRDIS Long-Slit Spectroscopy pipeline

SMARTIES: Spheroids Modelled Accurately with a Robust T-matrix Implementation for Electromagnetic Scattering
tpipe: Searching radio interferometry data for fast, dispersed transients
VIP: Vortex Image Processing pipeline for high-contrast direct imaging of exoplanets

Twenty-one codes were added to the ASCL in February, 2016:

Automark: Automatic marking of marked Poisson process in astronomical high-dimensional datasets
Celestial: Common astronomical conversion routines and functions
CHIP: Caltech High-res IRS Pipeline
CLOC: Cluster Luminosity Order-Statistic Code
COLAcode: COmoving Lagrangian Acceleration code

DELightcurveSimulation: Light curve simulation code
DUSTYWAVE: Linear waves in gas and dust
FilTER: Filament Trait-Evalutated Reconstruction
GANDALF: Graphical Astrophysics code for N-body Dynamics And Lagrangian Fluids
IRSFRINGE: Interactive tool for fringe removal from Spitzer IRS spectra

k2photometry: Read, reduce and detrend K2 photometry
LensTools: Weak Lensing computing tools
LIRA: LInear Regression in Astronomy
LRGS: Linear Regression by Gibbs Sampling
mbb_emcee: Modified Blackbody MCMC

NuCraft: Oscillation probabilities for atmospheric neutrinos calculator
POPPY: Physical Optics Propagation in PYthon
pyraf-dbsp: Reduction pipeline for the Palomar Double Beam Spectrograph
TailZ: Redshift distributions estimator of photometric samples of galaxies
The Cannon: Data-driven method for determining stellar parameters and abundances from stellar spectra

ZAP: Zurich Atmosphere Purge

Twenty-one codes were added to the ASCL in January, 2016:

BASCS: Bayesian Separation of Close Sources
CosmicPy: Interactive cosmology computations
ctools: Cherenkov Telescope Science Analysis Software
Fit Kinematic PA: Fit the global kinematic position-angle of galaxies
Hyper-Fit: Fitting routines for multidimensional data with multivariate Gaussian uncertainties

ImpactModel: Black Hole Accretion Disk Impact Model
ISO: Isochrone construction
K2fov: Field of view software for NASA’s K2 mission
LACEwING: LocAting Constituent mEmbers In Nearby Groups
LIRA: Low-counts Image Reconstruction and Analysis

MATPHOT: Stellar photometry and astrometry with discrete point spread functions
Nulike: Neutrino telescope likelihood tools
Odyssey: Ray tracing and radiative transfer in Kerr spacetime
PARAVT: Parallel Voronoi Tessellation code
ProC: Process Coordinator

QDPHOT: Quick & Dirty PHOTometry
SAGE: Semi-Analytic Galaxy Evolution
SavGolFilterCov: Savitzky Golay filter for data with error covariance
SCOUSE: Semi-automated multi-COmponent Universal Spectral-line fitting Engine
TRADES: TRAnsits and Dynamics of Exoplanetary Systems

WzBinned: Binned and uncorrelated estimates of dark energy EOS extractor

Twenty codes were added to the ASCL in December, 2015:

ALFA: Automated Line Fitting Algorithm
AstroBlend: Visualization package for use with Blender
Bisous model: Detecting filamentary pattern in point processes
CounterPoint: Zeeman-split absorption lines
CubeIndexer: Indexer for regions of interest in data cubes

DiffuseModel: Modeling the diffuse ultraviolet background
DRACULA: Dimensionality Reduction And Clustering for Unsupervised Learning in Astronomy
EDRS: Electronography Data Reduction System
EDRSX: Extensions to the EDRS package
ExoData: Open Exoplanet Catalogue exploration and analysis tool

FFTLog: Fast Fourier or Hankel transform
GetData: A filesystem-based, column-oriented database format for time-ordered binary data
GPC: General Polygon Clipper library
growl: Growth factor and growth rate of expanding universes
IRACpm: Distortion correction for IRAC astrometric data

Spirality: Spiral arm pitch angle measurement
TACT: The Action Computation Tool
TM: Torus Mapper
UPSILoN: AUtomated Classification of Periodic Variable Stars using MachIne LearNing
ZeldovichRecon: Halo correlation function using the Zeldovich approximation

Thirty codes were added to the ASCL in October and November 2015:

ASPIC: STARLINK image processing package
batman: BAsic Transit Model cAlculatioN in Python
ccdproc: CCD data reduction software
CCDtoRGB: RGB image production from three-band atronomical images
CosmoBolognaLib: Open source C++ libraries for cosmological calculations

DEBiL: Detached Eclipsing Binary Light curve fitter
DES exposure checker: Dark Energy Survey image quality control crowdsourcer
EPIC: E-field Parallel Imaging Correlator
GALFORM: Galactic modeling
Galileon-Solver: N-body code

George: Gaussian Process regression
GGADT: Generalized Geometry Anomalous Diffraction Theory
HumVI: Human Viewable Image creation
JKTLD: Limb darkening coefficients
JSPAM: Interacting galaxies modeller

LCD3: Three-parameter limb darkening coefficient sampling
MCAL: M dwarf metallicity and temperature calculator
Mercury-T: Tidally evolving multi-planet systems code
MHF: MLAPM Halo Finder
milkywayproject_triggering: Correlation functions for two catalog datasets

Pangloss: Reconstructing lensing mass
PromptNuFlux: Prompt atmospheric neutrino flux calculator
pyhrs: Spectroscopic data reduction package for SALT
PyLDTk: Python toolkit for calculating stellar limb darkening profiles and model-specific coefficients for arbitrary filters
SkyView Virtual Telescope

SparsePZ: Sparse Representation of Photometric Redshift PDFs
SuperFreq: Numerical determination of fundamental frequencies of an orbit
T-Matrix: Codes for Computing Electromagnetic Scattering by Nonspherical and Aggregated Particles
Xgremlin: Interferograms and spectra from Fourier transform spectrometers analysis
ZInCo: Zoomed Initial Conditions

Ten codes were added to the ASCL in September 2015:

AFR (ASPFitsReader): A pulsar FITS file reader and analysis package
FalconIC: Initial conditions generator for cosmological N-body simulations in Newtonian, Relativistic and Modified theories
FARGO3D: Hydrodynamics/magnetohydrodynamics code
GFARGO: FARGO for GPU
OPERA: Objective Prism Enhanced Reduction Algorithms

Tempo: Pulsar timing data analysis
TRUVOT: True Background Technique for the Swift UVOT Grisms
pycola: N-body COLA method code
PyCS: Python Curve Shifting
XSHPipelineManager: Python Wrapper for the VLT/X-shooter Data Reduction Pipeline

Ten codes were added to the ASCL in August 2015:

ColorPro: PSF-corrected aperture-matched photometry
FRELLED: FITS Realtime Explorer of Low Latency in Every Dimension
HMcode: Halo-model matter power spectrum computation
NGMIX: Gaussian mixture models for 2D images
NICOLE: NLTE Stokes Synthesis/Inversion Code

REDUCEME: Long-slit spectroscopic data reduction and analysis
SExSeg: SExtractor segmentation
SHDOM: Spherical Harmonic Discrete Ordinate Method for Atmospheric Radiative Transfer
TreeCorr: Two-point correlation functions
Trilogy: FITS image conversion software