The Spatiotemporal Epidemiological Modeler (STEM) tool is designed to help scientists and public health officials create and use spatial and temporal models of emerging infectious diseases. These models could aid in understanding, and potentially preventing, the spread such diseases. The STEM application has built-in GIS data for every county in the United States and includes data about county borders, populations, shared borders (neighbors), interstate highways, state highways, and airports. It was designed to make it easy for developers and researchers to plug in their own models.
Authentic is a Liberty-enabled identity provider aiming to address a broad range of needs, from simple to complex setups. Its Liberty compliance relies on Lasso, a free software implementation of the Liberty Alliance specifications. It is a quixote application and is commonly run inside the Apache Web server.
grepcidr can be used to filter a list of IP addresses against one or more Classless Inter-Domain Routing (CIDR) specifications, or arbitrary networks specified by an address range. As with grep, there are options to invert matching and load patterns from a file. grepcidr is capable of comparing thousands or even millions of IPs to networks with little memory usage and in reasonable computation time. It has endless uses in network software, including mail filtering and processing, network security, log analysis, and many custom applications.