CSPro (Census and Survey Processing System) is a public-domain software package for entering, tabulating and mapping census and survey data. CSPro was designed and implemented through a joint effort among the developers of IMPS and ISSA: the United States Census Bureau, Macro International, and Serpro, S.A. Funding for the development is provided by the Office of Population of the United States Agency for International Development. CSPro is designed to eventually replace both IMPS and ISSA.
http://www.census.gov/ipc/www/cspro/index.html

DemoGraphics makes it easy to browse, analyze and present (global) demographic data from the United Nations Population Assessments and Projections (1996 edition). All necessary data are already included. DemoTables is a data browser. It is the first and only tool that gives you a "one-click access" to demographic data for all countries worldwide - covering a period from 1950 to 2050. The software combines an easy to use interface with a solid database on demographic trends worldwide.
http://www.magnet.at/heilig

This site of the Futures Group includes among others downloadable versions of SPECTRUM, the MTCT (Mother to Child Transmission of HIV)-model, AIM and RAPID
http://www.tfgi.com/software.asp

The Integrated Microcomputer Processing System (IMPS) performs the major tasks in survey and census data processing: data entry, data editing, tabulation, data dissemination, statistical analysis and data capture control which can be used as a complete processing system or as stand-alone modules.
http://www.census.gov/ipc/www/imps/index.html

Consisting of 45 spreadsheets (to be used in MS-Excel or Lotus 1-2-3) for population analysis, PAS (Population Analysis Spreadsheets) is a basic demographic tool to analyse age structure, mortality, fertility, migration, geographic distribution of the population, urbanization and population projections.
http://www.census.gov/ipc/www/pas.html

An advocacy tool modeling the interrelationships between Population, Environment, Development and Agriculture. Developed for the ECA by Dr. Lutz and Dr. Scherbov

Software that creates and processes hierarchical databases from censuses, surveys, vital statistics and other sources for local, regional, and national analyses; produces thematic maps.
http://eclac.org/software/default-i.asp

The population projection program RUP (Rural-Urban Projection) can be used for projecting the population of one or two areas (usually urban and rural areas) simultaneously. There are two options: (a) to project each of the areas and obtain the total as an aggregate, or (b) to project the total and one area and obtain the other area by subtraction.
http://www.census.gov/ipc/www/rup.html