Patuxent Software Archive -
Site contains software for ecological management, including tagging game and ecosystem analysis.
http://www.mbr-pwrc.usgs.gov/software.html

Pisces Conservation Ltd -
 Information about ecological software and consultancy services.
http://www.pisces-conservation.com/

Pollen-based Climate Reconstruction -
 Windows software that provides quantitative climate reconstruction from pollen spectral datasets.
http://dendro.naruto-u.ac.jp/~nakagawa/

Population Ecology -
 Online quantitative population ecology lectures and population model and data information.
http://www.ento.vt.edu/~sharov/

Populus - Simulations of Population Biology -
 Software containing set of simulations used to teach population biology and evolutionary ecology at the University of Minnesota. Freely downloadable for educational use.
http://www.cbs.umn.edu/populus

Program Distance -
 Distance is a software program designed for the analysis of distance sampling data, to estimate density and abundance of a population.
http://www.ruwpa.st-and.ac.uk/distance/

RAMAS Ecological and Environmental Software -
 Offers software for ecology, conservation biology, wildlife management, and human health risk analysis. Data analysis for endangered and threatened species, models of extinction risk assessment linked to geographic information systems.
http://www.ramas.com

RHABSIM -
 RHABSIM (Riverine HABitat SIMuation) is a fully integrated program for river hydraulics and aquatic habitat modeling using the Instream Flow Incremental Methodology (IFIM). Running in Microsoft Windows and DOS, it is an extensive conversion of the PHABSIM hydraulic and habitat simulation system developed by the U. S. Fish and Wildlife Service.
http://www.northcoast.com/~trpa/index.html