A tab you have not used for half an hour sleeps and gives its memory back. Keep Awake keeps the tabs you need ready.
Satori puts idle tabs to sleep. A tab you have not used for half an hour sleeps and gives its memory back to the page you are reading. Its icon dims and a moon appears in the tab row or the sidebar, so you can see which tabs will load. Click a sleeping tab, and its page loads again.
Satori does not sleep tabs just because free memory looks low, since macOS lends free memory to caches. A tab goes to sleep sooner only when macOS itself says memory is short.
Some tabs stay awake. Pinned tabs stay awake already. For any other tab, choose Keep Awake from its menu. A tab that holds music or a film paused stays awake for up to four hours, and a low-memory warning leaves it alone. Critical memory still puts it to sleep.
The last session comes back when Satori starts, but each restored tab waits. It loads only when you switch to it. A sleeping tab returns under a picture of the page as it was, and the live page replaces the picture once it has loaded.
Satori is small, fast, and quiet, with one field for addresses and searches.
Download Satori for Mac.
Satori is signed with a Developer ID certificate and notarized by Apple. macOS may ask you to confirm the first time you open it, but there is no malware or unidentified-developer warning. Updates arrive on their own through Sparkle.
