Halkyon is a spaced-repetition app for your own material: studysets of flashcards, notes, learning paths and PDFs, reviewed on an FSRS schedule. Every studyset is made by its learners: build yours for any subject, or copy one that someone published. It works offline and syncs between your devices.
Learn from what you watch: play films and shows from your Jellyfin server, and every subtitle line is split into dictionary words, with readings above and the translation below. Tap a word, and it is a flashcard.
Dictionaries for Japanese, Chinese, Korean, German, Greek and English; kanji, hanzi and Hangul written by hand, each stroke checked; exam plans for the JLPT, HSK and Korean levels, with a daily pace to your exam's date; and studysets published to Explore and copied, later releases coming in as merges that keep your own edits.
You sign in with SimpleLogin, by Proton, or with an email address, a password and an authenticator app. It connects to halkyon.li, the project's instance, or to any other: everything an instance needs is in the repository, to run your own. The app is AGPL-3.0 and the server SSPL-1.0, so all of its code is public.
Questions and reports: support@halkyon.app
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Snaps are applications packaged with all their dependencies to run on all popular Linux distributions from a single build. They update automatically and roll back gracefully.
Snaps are discoverable and installable from the Snap Store, an app store with an audience of millions.
Snap can be installed from the command line on openSUSE Leap 15.x and Tumbleweed.
You need first add the snappy repository from the terminal. Choose the appropriate command depending on your installed openSUSE flavor.
Tumbleweed:
sudo zypper addrepo --refresh https://download.opensuse.org/repositories/system:/snappy/openSUSE_Tumbleweed snappy
Leap 15.x:
sudo zypper addrepo --refresh https://download.opensuse.org/repositories/system:/snappy/openSUSE_Leap_15.6 snappy
If needed, Swap out openSUSE_Leap_15. for, openSUSE_Leap_16.0 if you’re using a different version of openSUSE.
With the repository added, import its GPG key:
sudo zypper --gpg-auto-import-keys refresh
Finally, upgrade the package cache to include the new snappy repository:
sudo zypper dup --from snappy
Snap can now be installed with the following:
sudo zypper install snapd
You then need to either reboot, logout/login or source /etc/profile to have /snap/bin added to PATH.
Additionally, enable and start both the snapd and the snapd.apparmor services with the following commands:
sudo systemctl enable --now snapd
sudo systemctl enable --now snapd.apparmor
To install Halkyon, simply use the following command:
sudo snap install halkyon --edge
Browse and find snaps from the convenience of your desktop using the snap store snap.
Interested to find out more about snaps? Want to publish your own application? Visit snapcraft.io now.