This also interests me. Is there any GTK-based frontend to take notes and sync them to the Nextcloud note app?

    Google Keep pinned to Latte Dock.

    I use Notes functionality in Vivaldi Broswer so that it's always synced on all my machines without installing anything more than my favorite browser.

    One of my notes is a todo list. A conky script parse it to show it on my desktop, very easily.

    ${execi 30 jq -r '.children[]|select(.id=="49").content' ~/.config/vivaldi-snapshot/Default/Notes|tail -n +3}

    Now, waiting for Vivaldi Mobile....

    21 days later

    I use TagSpaces for this. I couldn't find an evernote replacement years ago so I settled on TagSpaces because its cross platform and I don't have to mess with the cloud. 😉

    2 years later

    @WilliamPer Please try to avoid commenting on old posts ("necroing"). This thread was inactive for over 2 years.

    @1#4933 If you have better ideas for simple, cross-platform and synchronizable note-taking schemes, feel free to share those.

    I haven't personally had any need for that, but I understand that Vivaldi's notes feature works between a PC and an Android device, provided Vivaldi is on both. Perhaps this is the answer to your quest.

    I currently use Neutrinote on Android and Sublime Text on Solus. The notes are synchronized via a cloud.