Tabby monitors your browser RAM in real time and automatically puts inactive tabs to sleep when memory gets high. Unlike Chrome and Edge built-in memory savers which work on a fixed timer, Tabby reacts to actual RAM pressure. When RAM is fine it does nothing. When it spikes it acts immediately. Includes live RAM monitor, smart tab scoring, protected sites, form protection, and daily stats. One-time payment of $4.99. No subscription. No account required.