When I was a WinXXX user, a basic tool for collaboration at my work was ATNotes. It let us to send each other notes. Knotes was doing a good job on it, even letting us send notes to ATNotes and viceversa. ATNotes had (http://atnotes.free.fr) a more practical way that let us add users, and even show if they was online or not (http://atnotes.free.fr/images/snap6.jpg) So, I think that is a "must have" to make a better KNotes for all of us. Thank you Reproducible: Always
"Kepas" (discountinued) let do my suggestions, and even use KNotes to send notes. It's a pity do not try to make these applications to continue working togheter.
KNotes is no longer maintained since 24.08. Please migrate to Marknote. https://apps.kde.org/marknote/ See https://invent.kde.org/sysadmin/release-tools/-/merge_requests/53