the conference. In March 2016, Tom Rondeau stepped down and was replaced by Ben Hilburn as the Project Lead, and Johnathan Corgan, a long-time maintainer, as the Chief Architect. In January 2018, Johnathan Corgan retired from his role as Chief Architect and was replaced by Marcus Müller. In September 2020, GNU Radio became part of the SETI Institute (a non-profit, multi-disciplinary research and education organization) for all financial and contractual purposes. In October 2020, Ben Hilburn and the project officers at the time voted to reorganize the GNU Radio Project's leadership, forming a General Assembly with a set of by-laws that regulate details of how the organization operates. A three-member Board made up of elected General Assembly members took over the roles previously handled by the Project Lead. Software GNU Radio Companion The GNU Radio Companion is a graphical UI used to develop GNU Radio applications. This is the front-end to the GNU Radio libraries for signal processing. GRC was developed by Josh Blum during his studies at Johns Hopkins University (2006-2007), then distributed as free software for the October 2009 Hackfest. Starting with the 3.2.0 release, GRC was officially bundled with the GNU Radio software distribution. GRC is effectively a Python code-generation tool. When a flowgraph is "compiled" in GRC, it generates Python code that creates the desired GUI windows and widgets, and creates and connects the blocks in the flowgraph. GRC currently supports GUI creation using the Qt toolkit. Plotting and Displays GNU Radio provides many common plotting and data visualization data sinks, including FFT displays, symbol constellation diagrams, and scope displays. These are commonly used both for debugging radio applications and as the user-interface to a final application. PyBOMBS Many users create "out-of-tree modules" for use with GNU Radio. To manage these, and the dependencies required to run GNU Radio, the organization created the PyBOMBS (Python Build Overlay Managed Bundle System) project. See also Software-defined radio Universal Software Radio Peripheral References External links GNU Radio in the Free Software Directory Amateur radio software for Linux Amateur radio software for macOS Amateur radio software for Windows Free communication software Free software programmed in Python Radio Linux audio video-related software Software forks Software that uses Qt Software-defined radio