Tells MosaicShell what your browser is playing, including YouTube Music likes. Talks only to MosaicShell on your computer.
Users
3
store count
Rating
0.0 / 5
unchanged in 30 days
Ratings
0
total ratings
Store rank
#301K
#244K among extensions
Version
2026.10.9-b7
updated 9 Oct 2026
Users
monthly, 1 months
Latest, 15 Oct 2026:3 usersMove the mouse over the chart for any month
Ratings count
monthly, 1 months
Latest, 15 Oct 2026:0 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About Grout
Grout is the browser companion for MosaicShell, the Windows desktop shell. It tells MosaicShell what your browser is playing, so MosaicShell's flyouts show the right title, artist and cover, and the like and dislike buttons work, even while the browser window is covered or minimised.
What it reports, on YouTube Music, YouTube, Spotify (web player) and SoundCloud:
- title, artist, album and cover
- playing or paused
- on YouTube Music, whether the track is liked or disliked, and pressing like or dislike from MosaicShell
Needs MosaicShell. Start MosaicShell once; it sets up Grout's connection for your Windows account. Without MosaicShell, Grout does nothing. Click Grout's toolbar icon to see whether it is connected.
Private by design. Grout talks only to MosaicShell, on your own computer. It has no account, no servers, no analytics, no remote code and no host permissions, and it runs only on the four sites above.
Free and open source under the GPL-3.0-or-later: https://github.com/uairhahs/Grout