This is about Asgardius S3 Manager
Asgardius S3 Manager is an Open Source File Manager created for multiple platforms. We have a version for Android, web and soon a qt version for Linux Phones like Pinephone and Librem 5
You can buy Android version at Play Store or download our source code and compile it by yourself to get it for free. Web version is made to be selfhosted. Linux version is made using pyqt6 and works on both desktop an mobile