Greenwich Golf Fitting Studio
Offers KZG and Ruger, fitting, located near NYC in tri-state area.
http://www.greenwichgolf.com/

OriginLab
OriginLab produces professional graphing and data analysis software for scientists and engineers. Our products are designed to be easy-to-use, yet have the power and versatility to provide for the most demanding user.
http://www.originlab.com/

2D Curve Fitting
Online Software for Structural Engineer, Student - Bending Moment, Deflection & Shear of Beam - Curve Fitting – Truss – Plate - Stress - Buckling & Nonlinear Behavior of Thin Shells by Large Deflection, Shock Absorber
http://www.soft4structures.com

Balance Certified Golf
Balance-Certified has revolutionized the game with the first counter-weight technology to bring golfers of all levels the ability to tune every club in their bag. Tour proven fitting systems allow golfers to feel and see the difference immediately.
http://www.balance-certified.com/

FitStik Bicycle Fitting Tool
Lets you duplicate riding position on any bicycle. Also for initial bike fitting. Used by bicycle shops, clubs, training, spin classes, coaches, racing, triathlons.
http://www.cyclemetrics.com

Curve fitting software
Focus is a curve fitting software for the Windows operating system that has been developed to facilitate spectroscopic modelling and data exchange
http://crmht.cnrs-orleans.fr/pot/software/focus.html

Least Squares Method Program
Weighted nonlinear least squares estimation curve fitting program. Weighted nonlinear least squares regression analysis program, freeware to download. Weighted least squares fitting program. Least squares method, multidimensional least squares approximation. Errors (covariance matrix) in each axis, many dimensions.
http://www.prz.rzeszow.pl/~janand/

Spline Forte
Spline Fort is program for Spline interpolation and fitting. It can fit a set of data with several orthogonal polynomials and various Lp norm values. Fitting result can be exported as subroutine. Spline Forte is especially useful for sensors linearization and automatic control.
http://www.andrijar.com/splinef.htm

Digitoe Shoes
Custom Made Shoes, Digitoe Computerized Footwear Systems, Shoes for the 21st Century, custom made shoe lasts, and custom fit footwear, each shoe made to fit the individual foot, the most comfortable best fitting footwear you can imagine
http://www.digitoe.com/

Golfix
Golfix Precision Golf Equipment is an on going 15 year old endeavor to produce the best fitted and best made clubs a golfer can buy.
http://www.valleyimall.com/golfix/