Proton has open-sourced all its Proton Drive apps for Windows, macOS, iOS, and Android, emphasizing transparency and privacy. Source code for each version is available on GitHub https://alternativeto.net/news/2024/9/proton-open-sources-all-proton-drive-apps-to-enhance-transparency-and-privacy/
@alternativeto good step in the right direction. Although its disappointing @protonprivacy hasn't started development of a Linux version of Proton Drive yet.