The Artificial SEM Image Generator (artimagen) library generates artificial scanning electron microscope (SEM) and helium-ion microscope images of various samples, including gold-on-carbon resolution samples and some semiconductor structures. Numerous effects that appear in real SEMs are simulated (noise, drift-distortion, edge-effect, etc.), which enables assessment of imaging, metrology, and other techniques that work with SEM micrographs. Unlike the real SEM images, the artificial images exhibit defined types and amounts of these effects, which is their key advantage.
AtomEye is atomistic visualization software fast enough to handle output of molecular dynamics simulations with millions of atoms. It includes parallel and perspective projections with full three-dimensional navigation, customizable bond and coordination number calculation, colour-encoding of arbitrary user-defined quantities, local atomic strain invariant, coloured atom tiling and tracing, up to 16 cutting planes, periodic boundary condition translations, JPEG, PNG, and EPS screenshots, and animation scripting.
AudioScope is a text mode audio oscilloscope that captures sounds using DEMO, SOX, or DSP (/dev/dsp}. It is primarily a learning tool for kids. The script includes code and circuit diagrams for calibrating the horizontal and vertical axes. It features a demo mode with no dependences that samples /dev/urandom.
BGPHist is a tool that receives MP-BGP updates, decodes them, and writes them to a database for logging and monitoring purposes. It support not only Internet routes, but also these address families: IPv4 multicast, IPv4 labeled unicast, VPNv4 unicast, IPv6 unicast, IPv6 labeled unicast, VPNv6 unicast, L2VPN VPLS-VPWS, and IPv4 MVPN. It supports text output, MySQL databases, and Oracle databases. For the MySQL backend, there is also a simple PHP frontend. It could be used to monitor and log an ISP's customer activity for Internet and VPNs, as a passive BGP looking glass, or as a backend for some external monitoring and accounting system.
BRL-CAD is a powerful constructive solid geometry solid modeling system that includes an interactive geometry editor, ray-tracing support for rendering and geometric analysis, path-tracing for realistic image synthesis, network distributed framebuffer support, and image and signal-processing tools.