Open Source Solid Modeling CAD
BRL-CAD is a powerful cross-platform constructive solid geometry solid modeling system that includes an interactive geometry editor, ray-tracing for rendering & geometric analyses, network distributed framebuffer support, image & signal-processing tools.
Library to control radio transceivers and receivers
The Hamlib project's purpose is to develop flexible and portable shared libraries that offer a standardized API to control any radio oriented equipment through a computer interface.
Cross-platform, scientific graphics plotting library
PLplot is a cross-platform, scientific graphics plotting library that supports math symbols and human languages (via UTF-8 user input strings); plot capabilities for multiple non-interactive plot file formats and in multiple interactive environments; and bindings for multiple computer languages.
Sakura is a Knowledge Navigator and User Interface for UNIX, which implements HyperMedia and its own windowing and packing system, both in the main program and in an extensive API for Tcl and other languages.
LinuxCNC controls CNC machines. It can drive milling machines, lathes, 3d printers, laser cutters, plasma cutters, robot arms, hexapods, and more.
Capsim(r) C Text Mode Kernel(TMK),DSP and communication blocks, topologies, libraries and tools for the development of high performance block diagram digital signal processing and communications systems,built in interpreter for scripting.SystemC support.
CAVOR is an engine for building apps that involve both graphic and text/numeric data. Primarily GIS is the initial focus, but consider also CAD, CASE, project management (eg PERT charts), and others. Built-in scripting, C API, also supports Tcl and Java.
Ellogon is a multi-lingual, cross-platform, general-purpose language engineering environment.
HQP was migrated to git. See https://github.com/omuses/hqp
IPAT-S is a scenario modeling language. Use it for rapid development of quantitative strategic scenarios for governments, agencies, businesses, etc. using a fast and compact interpreted language. Package includes IPAT Studio development environment.
KML is a knowledge base with support of logical modeling. Advanced model is used to represent knowledge as a set of statements similar to natural language sentences. This project hosts a set of model storage library and server (vrb-ols) and clients.
NexPower - a suite of tools for transient and harmonic analysis of electric power distribution and transmission systems.
A loadable module for Tcl allowing access to the GDAL library's API
A TCL API for shapelib
linroute is an attempt at making unix/linux route detection/delivery without depending on the underlying os/protocols/drivers.