All of the technologies here, including Photon, are open sourced under commercial-friendly open source licenses (the MIT license being most common in this space.)<p>Electron is a &quot;competitor&quot; to NW.js (previously known as NodeWebkit). It was developed by Github for their commercial and non-commercial applications.<p>There should be no concerns about using these things in commercial projects. But you don&#x27;t have to take my word for it, all of these projects have open source repositories, most of them on GitHub, and you can check their LICENSE files for yourself.