The Freedom Voices Network was announced / launched a few days ago and uses SecureDrop. It is a French based inititative. I’m not sure what is the URL of the web site.
The website is here : https://forbiddenstories.org/ and an audio interview of Laurent Richard, its founder. And it looks like their SecureDrop is not yet in operation. It is an initiative of RSF https://rsf.org/en/news/launch-forbidden-stories-project