In order to use the application without an account, you must select 'Local RSS' and use the '+' in the left sidebar to manually add RSS feeds. It will also be necessary for you to login and / or authenticate with your data. In the list that will be displayed, you will have to select your feed service from the list. The first time you run the RSS Feedreader, it will ask you to log in or set up an account:

If you don't see it after a few minutes, give it a try and restart your computer. I have read out there that some have had to restart GNOME Shell to see the launcher. Once the installation is complete, you can find the application launcher for FeedReader in the Dash. Now you just have to wait while it downloads and unpacks (they are about 120MB). To give the authorization you will only have to press 'y' to accept this. The system will ask you to authorize the addition of the GNOME remote control that is required to get the GNOME runtime that Feedreader needs to run. The thing at this point is that you will have to pay attention to the terminal after executing this command. This will help us install Feedreader from the official Feedreader Flatpak repository: flatpak install Once the previous actions are finished, we only have to execute the following command. If you're using Ubuntu 17.04 (or once you've added the Flatpak repo just shown) you can run the following command to install everything you need to install Feedreader: sudo apt install xdg-desktop-portal xdg-desktop-portal-gtk flatpak We open a terminal (Ctrl + Alt + T) and write: sudo add-apt-repository ppa:alexlarsson/flatpak & sudo apt update & sudo apt install flatpak This is to ensure that you are using an updated version of Flatpak with all its latest features and fixes.

If you are using Ubuntu 16.04 LTS or 16.10, the first thing you should do is add the official Flatpak PPA. Since I don't know which libraries the user has on their system, the instructions below assume that a Flatpak has never been installed.

For these reasons you will need to resort to Flatpak to install Feedreader on the Ubuntu desktop. I also understand that an attempt has been made to carry out a Snap package, which is already stagnant. According to what has been published on some sites, the PPA that was used is defunct. In previous versions, it used to be easy to install Feedreader on Ubuntu using a PPA. How to install RSS Feedreader reader on Ubuntu 1 How to install RSS Feedreader reader on Ubuntu.