If you don't want to pay for software and just want a taste of window previews, there is a hidden native macOS feature. However, it only works within the app you are currently using.
A: Technically, yes, using SIP (System Integrity Protection) hacks and legacy SIMBL injection. Do not do this. It makes your Mac insecure, likely to kernel panic, and you will lose all your data eventually. hyperdock for mac
HyperDock was last officially updated in (version 1.8). The developer, Bahnhoff, shifted focus almost entirely to iStat Menus, leaving HyperDock in a state of "maintenance mode." If you don't want to pay for software
: HyperDock adds configurable "helper" shortcuts to Dock apps. Users can assign specific mouse clicks or key combinations to: Open new windows or documents instantly. Hide or quit applications without opening them. Trigger macOS features like Mission Control or Exposé. Do not do this
HyperDock remains a significant tool for macOS users who prioritize high-speed window management. By retrofitting the Dock with previews and snapping features, it transforms a simple launcher into a powerful multitasking hub. While newer competitors like Cisdem Window Manager exist, HyperDock's specific focus on enhancing the Dock itself remains its unique value proposition. If you'd like to refine this further, let me know: Should I focus more on ?
If HyperDock fails on your macOS version, try these: