If you need push notification, yes, it is going to cost (if its an Electron app, it'll cost you also RAM). Google provides such already, via GCM/Firebase. I me

If you need push notification, yes, it is going to cost (if its an Electron app, it'll cost you also RAM). Google provides such already, via GCM/Firebase. I mean, you could just run IRC in a TUI (e.g. Irssi or WeeChat) and connect to that via Mosh plus Tmux. You'd have low latency, 24/7 uptime, resuming, low resource usage... but no push notifications.