Nextcloud is our Open-Source file hosting solution for our Institute. It uses the same credentials as the @asc mail address.
To Connect to it, just got to https://nemesis.asc.tuwien.ac.at/ . Here you see the web access to to the Nextcloud, where you can save, share, backup and even edit most files directly in the browser.
The probably best solution to connect to it is via the so called Desktop Client. With this you will be able to mirror a Folder on your Computer with your Nextcloud. This is perfect for file transfer from one Computer to another and also for backing up important files. To get the client click on THIS link and follow the instructions. Once everything is set up your Nextcloud folder will automatically synchronize. You can in- or exclude folders in the settings. The sharing of files only works in the web application.