The software alternatives suggested here so far I found not so good
The best replacement for me is the Audio Brainwave software by saschArt. There are some free plugins, especially interesting is the panoscillator (for creating bilateral sound waves for brainspotting according to David Grand). For Brainwave Entrainment I use the following therapy vst plugins:
Isochronic tones and goldwavegenerator.
Please check them out yourself, link:
https://vst.saschart.com
I also bought the software BrainwaveProducer from SaschArt, with which you can use the plugins without DAW. Everything works perfect. But without audiostrobe!
Good luck!
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