Prism Browser has been discontinued. Similar apps include GNOME Web, which is free and open source. Other options are Coherence X, Pokki and Fogger. In total there are four Web Browsers like Prism Browser for Linux, Mac and Windows.
GNOME Web is the web browser for the GNOME desktop, based on the popular WebKit engine. It offers a simple, clean, beautiful view of the Web featuring first-class GNOME desktop integration. Its code name is Epiphany.
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Transform websites into standalone Mac apps with custom icons and names, select between major browser engines, add apps to the Dock or desktop, run in full screen, organize workflow, receive notifications, and keep web activities separated on macOS.
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Pokki puts web-connected apps in your taskbar, so they're always only one click away. Welcome to the modern desktop.
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Fogger turns your cloud apps into regular desktop apps. Fogger acts as a bridge between web applications and the linux desktop. It exposes an easy to use JS API to webapps which can be used to interact with the host desktop environment. It can also be used to write basic desktop.
