![](/static/253f0d9/assets/icons/icon-96x96.png)
![](https://lemmy.dbzer0.com/pictrs/image/a18b0c69-23c9-4b2a-b8e0-3aca0172390d.png)
I haven’t tried these so I cannot comment on their quality. But this has a list. Of particular note is RetroArch, OpenEMU, and Gens as three FOSS options.
Edit: Also, alternativeto.net is usually a decent source for finding alternatives for specific software. Here’s the list for Kega Fusion alternatives. This has some more options than the other link I provided.
There were a couple of high profile cases in Canada a while back.