In addition to the program resources listed below, do not forget about Stata's net capabilities, which allow you not only to find new additions but to install them as well. The links below are different from the ones you would find using Stata itself. Canada A complete archive of programs exchanged on the Stata listserver and other programs for Stata.
Site includes full search capabilities.
Downloadable Stata Spatial GMM Code , Northwestern University, USA Stata programs by Timothy G. Conley for spatial GMM, multidimensional scaling, and other spatial procdures. EpiData Freeware data entry program , Funen Country, Health Services Division, Denmark. Program by Jens M. Lauritsen, Michael Bruus and Mark Myatt. Stata Programs to Generate Design Matrices , University of Nijmegen, The Netherlands Stata programs by John Hendrickx to generate dummy variables corresponding to a wide range of design matrices. Stata Programs by Jonah B. Gelbach , University of Maryland, College Park, USA Stata programs by Jonah B. Gelbach, including mean marginal effects for probit and logit, fixed effects 2SLS, etc.