Twenty-five codes were added to the ASCL in August 2019:

actsnclass: Active learning for supernova photometric classification
Analysator: Quantitative analysis of Vlasiator files
BEAST: Bayesian Extinction And Stellar Tool
bias_emulator: Halo bias emulator
dips: Detrending periodic signals in timeseries

DustCharge: Charge distribution for a dust grain
EBAI: Eclipsing Binaries with Artificial Intelligence
FastCSWT: Fast directional Continuous Spherical Wavelet Transform
FIRST Classifier: Automated compact and extended radio sources classifier
GBKFIT: Galaxy kinematic modeling

Gramsci: GRAph Made Statistics for Cosmological Information
JPLephem: Jet Propulsion Lab ephemerides package
MAESTROeX: Low Mach number stellar hydrodynamics code
Molsoft: Molonglo Telescope Observing Software
MosfireDRP: MOSFIRE Data Reduction Pipeline

NuRadioMC: Monte Carlo simulation package for radio neutrino detectors
oscode: Oscillatory ordinary differential equation solver
PyRADS: Python RADiation model for planetary atmosphereS
PYSAT: Python Satellite Data Analysis Toolkit
QAC: Quick Array Combinations front end to CASA

QLF: Luminosity function analysis code
SNAPDRAGONS: Stellar Numbers And Parameters Determined Routinely And Generated Observing N-body Systems
TRISTAN-MP: TRIdimensional STANford – Massively Parallel code
Vlasiator: Hybrid-Vlasov simulation code
YMW16: Electron-density model

Twenty-eight codes were added to the ASCL in April and May 2016:

2-DUST: Dust radiative transfer code
ASTRiDE: Automated Streak Detection for Astronomical Images
BACCHUS: Brussels Automatic Stellar Parameter
CAMELOT: Cloud Archive for MEtadata, Library and Online Toolkit
CCSNMultivar: Core-Collapse Supernova Gravitational Waves

cluster-lensing: Tools for calculating properties and weak lensing profiles of galaxy clusters
DISCO: 3-D moving-mesh magnetohydrodynamics package
DNest3: Diffusive Nested Sampling
DUO: Spectra of diatomic molecules
FDPS: Framework for Developing Particle Simulators

grtrans: Polarized general relativistic radiative transfer via ray tracing
Halotools: Galaxy-Halo connection models
K2SC: K2 Systematics Correction
LAMBDAR: Lambda Adaptive Multi-Band Deblending Algorithm in R
libpolycomp: Compression/decompression library

magicaxis: Pretty scientific plotting with minor-tick and log minor-tick support
MARZ: Redshifting Program
MUSCLE: MUltiscale Spherical-ColLapse Evolution
OpenMHD: Godunov-type code for ideal/resistive magnetohydrodynamics (MHD)
PDT: Photometric DeTrending Algorithm Using Machine Learning

SAND: Automated VLBI imaging and analyzing pipeline
Shadowfax: Moving mesh hydrodynamical integration code
Surprise Calculator: Estimating relative entropy and Surprise between samples
The Tractor: Probabilistic astronomical source detection and measurement
TMBIDL: Single dish radio astronomy data reduction package

TRIPPy: Python-based Trailed Source Photometry
TTVFaster: First order eccentricity transit timing variations (TTVs)
zeldovich-PLT: Zel’dovich approximation initial conditions generator