This page last updated: August 19, 2009 21:54 © JFF and Intereconomics LLC, 19922007 
Software required

Partial or general equilibrium  Single or multiregion 
Partial equilibrium models 



The GSIM model: <This link includes all files and documentation.GSIMv2: A nonlinear, 35 region spreadsheet version of the GSIM model augmented to include sectorlevel employment effects and price undertakings, in addition to trade taxes and subsidies and domestic production subsidies. There is also a short background paper.
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GSIMv2.XLS (a 35 region nonlinearized implementation inclusive of optional employment estimates)
GSIMv1: The original
GSIMv1 (Global
SIMulation model) that was developed for the World Bank’s WITS package for tariff and
trade analysis, along with a short background technical paper from Francois
and Hall (2002). This is a
global, multiregion, partialequilibrium model. If you are using this for teaching, I recommend starting with the GSIM4x4 version of GSIMv1, and not GSIMv2.
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GSIM4x4.XLS (a compact example
model with up to 4 regions, and only import tariffs)
●
GSIM25x25.XLS (a large
template, for up to 25 regions, with tariffs, export taxes/subsidies, and
production subsidies). 
Excel 
PE 
MR 
Perfect substitutes trade model:
A simple illustration of a partial equilibrium perfectsubstitutues model from Francois and Hall, Chapter 5 in Applied
Methods for Trade Policy Analysis: A Handbook, J.F. Francois and K.A.
Reinert, Cambridge University Press, 19971998. 
Excel 
PE 
SR 
Imperfect substitutes trade model:
A simple illustration of a partial equilibrium single importer Armington model, from Francois and Hall, Chapter 5 in Applied
Methods for Trade Policy Analysis: A Handbook, J.F. Francois and K.A.
Reinert, Cambridge University Press, 19971998. 
Excel 
PE 
SR 
AntiDumping &tc: The USITC’s set of COMPAS models
(including some documentation on the spreadsheet). These are used (or have been and sometimes are, depending
on the political relevance of economics for any given fair trade
investigation) for antidumping and countervailing duty investigations, for
assessment of injury. 
Excel 
PE 
SR 
SWOPSIM: from Chapter 8 in Applied
Methods for Trade Policy Analysis: A Handbook, J.F. Francois and K.A.
Reinert, 
Excel 
PE 
MR 
General equilibrium Excel® models 



123 Model: Excel implementation Devarajan et al
1997, Chapter 6 in Applied Methods for
Trade Policy Analysis: A Handbook, J.F. Francois and K.A. Reinert,
Cambridge University Press, 19971998. 
Excel 
GE 
SR 
123 model for Egypt: Excel implementation with Egyptian
data for 1998, J. Francois (2001). 
Excel 
GE 
SR 
123 model in steadystate: a steadystate extension (combining
Chapters 6 and 12 from Applied Methods
for Trade Policy Analysis: A Handbook, J.F. Francois and K.A. Reinert,
Cambridge University Press, 19971998. 
Excel 
GE 
SR 
GE Armington model: General
equilibrium extension of the Imperfect substitutes trade model from Francois
and Hall, with a short background technical
paper from Francois and Hall (1998). 
Excel 
GE 
SR 
Shipping model: International
trade with imperfect competition in shipping, from Francois and Wooton
(2001), “Market Structure, Trade Liberalization, and the GATS,” European Journal of Political Economy. 
Excel 
GE 
MR 
GTAP: Dominique van der Mennsbrugghe’s spreadsheet
implementation of the GTAP model. 
Excel 
GE 
MR 
General equilibrium models in GAMS® and GAUSS® 



GTAPE: A GAMS
implementation of a model of international trade that includes carbon
emissions. You will need access to
the GTAP database (not provided here).
This version is for GTAP4, which is benchmarked to 1995. 
GAMS 
GE 
MR 
IFPRI standard model:
This is the standard model developed by Sherman Robinson et al when at IFRPI. 
GAMS 
GE 
SR 
123 Model: GAMS implementation of the 123
model from Devarajan et al 1997, Chapter 6 in Applied Methods for Trade Policy Analysis: A Handbook, J.F.
Francois and K.A. Reinert, Cambridge University Press, 19971998 
GAMS 
GE 
SR 
Single region U.S. CGE model: (from
Chapter 7 of J.F. Francois and K.A. Reinert, 
GAMS 
GE 
SR 
Transition dynamics: a model of the Austrian economy from
Chapter 13 in Applied Methods for Trade
Policy Analysis: A Handbook, J.F. Francois and K.A. Reinert, Cambridge
University Press, 19971998. 
GAUSS 
GE 
SR 
Labor markets in GE: from Chapter 14 in Applied Methods for Trade Policy Analysis:
A Handbook, J.F. Francois and K.A. Reinert, Cambridge University Press,
19971998. 
GAMS 
GE 
SR 
The Small model: a 3region model implemented in MPSGE. This is the same aggregation used for
the “SIMPLE” model below. . HTMLbased
documentation is available.

GAMS 
GE 
MR 
The Large
Model: a multiregion,
MPSGEbased model used while I was at the GATT/WTO to assess the Uruguay
Round agreements. This model is
SAMbased (our global SAM is included). This was published, in various forms:
Francois, J.F., B. McDonald, and H. Nordstrom
(1993), “An Analysis of the Proposed Uruguay Round Agreement, with Particular
Emphasis on Aspects of Interest to Developing Economies, contributor, MTN
Negotiations Uruguay Round background paper, GATT: Geneva, November.
Francois, J.F.
B.J. McDonald, and H. Nordstrom (1996), "The Uruguay Round: A
Numerically Based Qualitative Assessment," in W. Martin and A Winters,
eds., The Uruguay Round and Developing Countries, Cambridge Univesity Press.
Francois, J.F.,
B.J. McDonald, and H. Nordstrom (1995), " Assessing the Uruguay
Round," in The Uruguay Round and the Developing Economies, edited by W.
Martin and L.A. Winters, Washington: World Bank (discussion paper number
307).
This includes a
number of features that were innovative for CGE models once upon a time: (1) explicit quotas (included in the
file), (2) global monopolistic competition (included in other models
available here), and (3) steadystate investment effects (included in the
file, and called “numeric ballistics” by Glenn Harrison when he first
commented somewhat unkindly on this back in 1993 :) . 
GAMS 
GE 
MR 
General equilibrium models in GEMPACK® 



GTAP model (old version): from Chapter 9 in Applied Methods for Trade Policy Analysis:
A Handbook, J.F. Francois and K.A. Reinert, Cambridge University Press,
19971998. This is a
multiregion CGE model. Further
documentation is available from Chapter 2 of
Hertel, T. (1996), Global Trade Analysis, Cambridge University Press. 
GEMPACK 
GE 
MR 
Steadystate investment effects: from Chapter 12 in Applied Methods for Trade Policy Analysis:
A Handbook, J.F. Francois and K.A. Reinert, Cambridge University Press,
19971998. 
GEMPACK 
GE 
MR 
Imperfect competition in GTAP: from J. Francois, Scale
Economies and Imperfect Competition in the GTAP Model, GTAP Technical
Paper No. 14, 1998. 
GEMPACK 
GE 
MR 
Capital
accumulation in GTAP: from J. Francois, B. McDonald, and H. Nordstrom, , Liberalization
and Capital Accumulation in the GTAP Model, GTAP Technical Paper No. 07,
1996. 
GEMPACK 
GE 
MR 
The
SIMPLE model: This is a
somewhat selfcontained (i.e. executable) and rather old modified version of the GTAP
model. It includes modifications I made in the early 1990s to introduce scale economies,
imperfect competition, nested and nonnested import demand, rigid wages, and
some capital mobility treatement to what was then the standard model. Many of these features are actually incorporated in the standard model now, or are available as addins elsewhere on this page.
This set of links is really here for historical completeness. The idea of the examples was to follow a single experiment across different model
features. HTMLbased documentation is available. These examples are built on the same
dataset as the “Small” model in GAMS/MPSGE linked above.

GEMPACK 
GE 
MR 
Multiregion Doha Round Model : This is a selfcontained (i.e. executable) 
GEMPACK 
GE 
MR 
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