Tessa tiles your windows and gets out of the way. Nine desktops, one keystroke each. Split or master-and-stack per desktop. Independent desktops on every display. It uses only the macOS Accessibility API. No SIP changes, no kernel extensions, no Terminal. Every shortcut, gap and rule is a switch in a settings window, not a line in a config file you have to learn first. The config file exists if you want it. 14-day trial. One-time purchase, two Macs, no subscription.