It has a customizable grid and supports multiple spaces. The popover can be opened from the Safari toolbar or with a customizable keyboard shortcut (default Cmd-Shift-E). Once open, you can drag and drop links to the grid to add them, or use the + button. Spaces and essentials can sync across your iCloud if you enable it in settings. There is no iPad/iPhone version yet though.
You can click on the label below the icons to rename them to something more useful, this doesn't change the link URL. You can right click for a context menu and from there you can delete, rename, change URL, etc. You can also drag an icon to reorder in a space, or drag it on another space to move. You can use keyboard shortcuts to move (Ctrl-1..9 to switch spaces, Opt-1..9 to open by index). You can open the extension settings from the gear icon in the popover for more customization.
It's $4.99 one-time purchase in the Apple App Store (Mac only, requires Safari 17+, macOS 14+). It has no analytics/telemetry, no backend or login, and no data is collected or seen by me. The only network call it makes is fetching the favicon (target site first, Google's public favicon service as fallback). Favicons are cached locally on your Mac. It doesn't manage Safari tabs or bookmarks, doesn't auto-open sites at startup, and doesn't read page content.
I am curious what people think. I'd be happy to get any feedback, bug reports, or feature requests.