I would like to share a little app I have been working on sporadically since September last year: Lanchat. It's a minimalist local chat application that works by broadcasting plain text messages on the local network. The purpose is to quickly send some link or text over from one device to another without going through any kind of centralized service on the web. Obviously it's built using compose for desktop and the release I just made is available for macOS, Windows, Debian and generic Linux from the Github downloads page. There's also an Android version available for download (or you could join the internal testing list on Google Play using https://play.google.com/apps/internaltest/4701681576107882712) Here's the github repo with source code and releases: https://github.com/sebkur/lanchat

Did you also implement vertical scroll for the main content?

sure! one thing that's missing though is auto-scroll to bottom when a new messages appears