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The coNCePTuaL developers designate their language (where the capital letters stand for Network Correctness and Performance Testing Language) as "executable pseudocode" that contains useful primitives for network programming. The resulting programs are often shorter and easier to write than in C, for example. The compiler creates UNIX executables and can thus use various backends, such as C with Message Passing Interface (MPI) or Unix-domain datagram sockets. The Conceptual programs return considerable system info and can generate diagrams.

Drawing a communication pattern in the Conceptual 1.0 Java GUI can produce a network test.

Version 1.0 provides a JVM-based GUI for graphical program creation. The project webpage provides a trial GUI as an applet or Java Web Start application. A Conceptual plug-in for the Eclipse developer environment for writing and executing network tests is also available.

The software was developed by Los Alamos National Security, a contractor to the U.S. Department of Energy, and is available under a modified BSD-style license. The project's SourceForge page includes downloads of Conceptual, its Java GUI and Eclipse plug-in as sources and binaries.

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