When I finally got sick enough of Edge to migrate my work PC to Firefox, being able to use Power Platform apps as PWAs instead of having them fill my browser with tabs was the one of the two things I missed. Between this and Sidebery, both features are covered to such an extent that going back to what I was missing now would be a significant step down.

Privacy was one of the main reasons I moved to Firefox, and I expected PWAs to be a necessary sacrifice in the name of effective isolation, but this extension supports all my existing extensions too: I'm able to supplement each app with uBlock, JShelter, LocalCDN, and whatever other site-specific extensions I might want to. PWAs run completely isolated from the main browser in their own shared instance of Firefox, and each can be set to launch on a specified profile - meaning I no longer need to think about Meta's cross site tracking seeing anything outside the profile I've set up to sandbox my Messenger PWA away from my Google Drive or Microsoft Office ones.

The PWAs are reliable and lightweight, and in my experience much better at handling their boundaries than their mainstream cousins - I've not had one kick me back to my main browser when I try to open a document yet, and they've had every opportunity.

PWAs for Firefox does have a more involved installation experience than most extensions and it can be a little bit finicky if you're working in a deployed environment - this is unfortunately by necessity, and I imagine most of the target audience are likely to be the sort of power user who has few qualms manually unpacking a Firefox installer. This is also the only thing I've encountered that even comes close to being a downside.

This took less than three hours to become an essential extension for me, and it's heartily recommended to anyone who prefers their convenience to come without a helping of tracking on the side.