H
Hazard Models: multiple programs, multiple authors.
Hodrick-Prescott Filters (two):  Simon van Norten.
 
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K
Kalman Filter:  David Nixon.
Kalman Filter: Geoffrey Shuetrim
KPSS stationarity test : Kristian Jönsson.
 
L
Least Absolute Deviation (LAD):  Ron Schoenberg.
Least Squares (Interatively Reweighted with Poisson Errors):  Ted Thompson.
Least Squares (Fully-modified):  Begoña Eguía.
Linear common trends models (with analytic impulse responses):  Maximo Comacho.
Linear Mixed Models:  Brian Steele.
Linear Regression (adaptive):  Douglas Hodgson.
Linear Regression (semiparametric, ARMA errors with stationary ergodic innovations):  
Douglas Hodgson, Keith Vorkink, and Irina Solyanik.
Linear Regression (Symmetric Stable):  J. Huston McCulloch.
Logit Estimation:  Alan Isaac.
Logit Models (including logit regression with continuation ratio model):  John S. Witte and Sander Greenland.
Logit Model (Heteroscedastic):  Langche Zeng.
Logit Model (Rare-Evens):  Gary King and Langche Zeng.
 
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Markov Chain Monte Carlo (MCMC) Algorithm: Random-Walk Metropolis:  Fridtjof Thomas.
Markov Processes (bootstrap methods):  Joel Horowitz.
Markov Switching:  James Hamilton
Markov Switching:  Bruce Hansen
Markov-switching models (time-varying transition probabilities using the Gibbs sampler):  Martin Ellison.
Markov Switching VAR:  Maximo Comacho.
Misspecification Test:  Bradley/McClelland.
Missing Data Utility:  Honaker, Joseph, King, Scheve, and Singh.
Mixed Logit Estimation for Cross-Sectional Data:  Ken Train
Mixed Logit Estimation by Hierarchical Bayes:  Ken Train
Mixed Logit Estimation for Panel Data:  Ken Train
Multivariate Hidden Markov Models:  Benoit Bellone (see copyright!).
Multivariate Statistics (not multivariate arma, not mult. garch): variously by Schoenberg and Schlittgen.
 
N
Negative Multinomial Regression:  Daniel Powers.
Newey and West covariance matrix:  Ka-fu Wong.
Newey-West errors:  Bartolini & Kramer.
Neural Networks (One Hidden Layer Feedforward):  Langche Zeng.
Neural Networks (Simulating):  Yoon Jaa Ho.
 
O
OLS w/ Jackknife Estimated Variances:  Geomina Turlea.
Optimization Routines:  Bo Honore and Ekaterini Kyriazidou.
Optimization: Davidson, Fletcher, Powell minimization routine:  Honore & Kyriazidou, modified by Alan Isaac.
Option pricing: Cameron Rookley.
Options data manipulation: Cameron Rookley.
Overlapping Generations Models: Burkhard Heer
 
P
Panel-Corrected Standard-Errors:  Franzese.
Panel Data (dynamic): Ann Owen.
Panel Data Procedures: Kristian Jönsson.
Panel Unit Root and Cointegration: Luciano Guitierrez.
Parametrized Expectations: Alfred Maussner.
Particle Filter:  David DeJong and Chetan Dave.
Principal Components:  Mico Loretan.
Probit Package (Bivariate: extensive):  Molenberghs and Lesaffre.
Probit and Logit:  Rizzo.
Proportional Hazards (generalized moments specification test):  Joel Horowitz.
 
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Quantile Regression Library:  Jacomy, Messines, and Roncalli.
Quantile Methods for Stable Distribution Parameter Estimation:  J. Huston McCulloch.
 
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(Solving the) Ramsey Model: Alfred Maussner
Regression (Local Polynomial):  Cameron Rookley.
Regression (Univariate Non-Parametric):  Cameron Rookley.
Regression (cross section, panal, IV): Felix Ritchie.
Regime Switching models:  van Norden and Vigfusson.
Robust Tail Index Estimation (with robust kernel variance estimation): Jonathan B. Hill.
Switching (Endogenous) Regression:  Park Wilde.
Risk Management Library (including copulas):  Thierry Roncalli
Roots of a Function:  Martin van der Ende.
 
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S-GARCH:  Schoenberg.
Seemingly Unrelated Regression (adaptive):  Douglas Hodgson.
Simulated ARIMA:  Esben Hoeg.
Simulation (ARCH, GARCH, IGRACH):  Mico Loretan.
Simultaneous Equations Estimation:  Ron Schoenberg.
Simultaneous Equations (Linear, Constrained and Unconstrained): Ron Schoenberg.
Stable random number generator:  J. Huston McCulloch.
Stable (Symmetric PDF):  J. Huston McCulloch
Stable Random Number Generators (more...):  J. Huston McCulloch.
State Space and Regime Switching programs:  Chang-Jin Kim.
State Space Univariate Time Series:  Geoffrey Shuetrim.
Stochastic Kernel Estimation: Luciano Guitierrez.
Stochastic Optimal Growth Model Using Log-Linearization: David DeJong & Chetan Dave
Stochastic Optimal Growth Model Using Orthogonal Collocation, Markov Process: David DeJong & Chetan Dave
Structural Break Tests (many tests for many environments): Junsoo Lee.
Structural Change Tests:  Bruce Hansen.
Structural Changes (Multiple):  Pierre Perron.
Survival Analysis (nonparametric):  Daniel Powers.
SWARCH: Rauli Susmel: 
Switching Regression: Simon van Noden.
 
T
t-GARCH:  Ron Schoenberg.
Tail Dependence Test (serial extremal dependence) : Jonathan B. Hill.
Tail Index Estimation (with robust kernel variance estimation): Jonathan B. Hill.
TAR specification test (univariate: Tsay's Test):  Ming Chien Lo.
TAR specification test ( multivariate: Tsay's test):  Ming Chien Lo 1999.
Threshold Autoregressions (constrained and unconstrained):  M. Caner and B. Hansen.
Threshold Cointegration Tests in VECM's:  B. Hansen and Byeongseon Seo.
Threshold Models/TARS:  Bruce Hansen
Time series analysis package (78 procedures: seasonal ARIMA, estimating missing values, …):  Schlittgen.
Trend/Cycle Decomposition: Beveridge-Nelson, State-space :  Maximo Comacho