ReBEL : Recursive Bayesian Estimation Library
ReBEL : Recursive Bayesian Estimation Library and Toolkit for Matlab
http://choosh.csee.ogi.edu/rebel/

Michael J. Black
Home page of Michael J. Black, Brown University, Department of Computer Science
http://www.cs.brown.edu/people/black/

System Identification Tool
System Identification Tool for Matlab.
http://tocsy.agnld.uni-potsdam.de/sit.php

2001 - Practical Distribution State Estimation Using Hybrid Particle Swarm Optimization
A hybrid PSO is proposed by introduction of the natural selection mechanism. The authors demonstrated hybrid PSO is better than original version on distribution state estimation problems.
http://homepage2.nifty.com/fukuyama-yoshikazu/HPSODSE%20fukuyama.PDF

G&P Engineering Software: Chemical Engineering, Physical Properties, Property Estimation
Chemical physical property data base and property estimation tool.
http://gpengineeringsoft.com

MCM Services
Estimation, CPM schedules and management.
http://www.mcmservices.com

ARMA and Kalman Filter model estimation
By J. Newton
http://www.stat.tamu.edu/ftp/pub/jnewton/load.f

The UNC Tracker Project
The University of North Carolina at Chapel Hill's research group on Wide-Area Head-Tracker research for virtual reality and augmented reality applications.
http://www.cs.unc.edu/~tracker/

h2m
H2M : A set of MATLAB/OCTAVE functions for the EM estimation of mixtures and hidden Markov models
http://www.tsi.enst.fr/~cappe/h2m

Robust Estimation of Simple Statistics
By T. Beers, K. Flynn, and K. Gebhardt.
http://www.pa.msu.edu/ftp/pub/beers/posts/rostat/rostat.f