For those unable to use GitHub's sponsor system, you can also donate via credit card through IQEngine Foundation's Givebutter https://givebutter.com/8sOk26

IQEngine is a free and open-source (FOSS) web-based SDR toolkit for analyzing, processing, and sharing RF recordings. The canonical instance running at www.iqengine.org is aimed at education and wireless research. One of the major goals of the IQEngine project is to promote the SigMF standard, which enables interoperability of tools that generate or process RF recordings.

Because IQEngine is a community-led project, with development stemming from both individuals and various organizations/companies, the GitHub sponsorship for the time being is entirely used for infrastructure costs associated with www.iqengine.org and the CI/CD behind the GitHub repo. In particular, allowing the public to run plugins, represents significant computational resources on the backend side, but it provides a valuable resource to those interested in experimenting with existing plugins or sharing their own work with the world.

Sponsorships and other donations go to the IQEngine Foundation which is a 501c3 nonprofit with the mission to promote and advance the IQEngine free and open-source software project, to support the growth of a diverse community of IQEngine users and developers, and to promote the use of IQEngine for sharing data openly between RF researchers and engineers.