Grout

Extension Functionality & UI3 users

Overview

Tells MosaicShell what your browser is playing, including YouTube Music likes. Talks only to MosaicShell on your computer.

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

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Details

Version
2026.10.9-b7
Updated
October 9, 2026
Flag concern
Offered by
Mosaic
Size
40.05KiB
Languages
English
Developer
Email
uairhahs@gmail.com
Non-trader
This developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.

Privacy

Manage extensions and learn how they're being used in your organization

Grout has disclosed the following information regarding the collection and usage of your data. More detailed information can be found in the developer's privacy policy.

Grout handles the following:

Website content

This developer declares that your data is

Not being sold to third parties, outside of the approved use cases
Not being used or transferred for purposes that are unrelated to the item's core functionality
Not being used or transferred to determine creditworthiness or for lending purposes

Support

For help with questions, suggestions, or problems, visit the developer's support site

YouTube Music Web Player Search

4.1

Quickly search the YouTube Music Web Player using the popup, right-click menu or Omnibox (YTM+Tab).

adiobox: Audio Player for Chrome(OS)

3.0

The Audio Player/Library that works on Chrome(OS)

YouTube Music Rich Presence

4.0

Displays your current YouTube Music activity on Discord and Listen along via a native helper application.

Music Identifier - Find any song from browser

4.6

What’s that song? Easy identify music from browser! Get lyrics, music videos, song history and their performers.

PlaylistMover - Spotify to YouTube Converter

5.0

Easily convert and transfer your Spotify playlists to YouTube for free. The ultimate Spotify to YouTube playlist converter.

YouTube Windowed FullScreen

4.2

Watch videos on YouTube fullscreen within your browsers screen.

Yellow Volume Booster

3.3

Boost browser tab volume up to 600% in Chrome. Free sound amplifier for YouTube, music, podcasts and video when 100% is too quiet.

YouTube Music Last.fm Scrobbler

4.0

Scrobbles songs from YouTube Music

Spotify Music Player

4.4

Access Spotify and YouTube Music in a side panel

YouTube Playlist Crossfade

2.6

Automatic crossfade between YouTube playlist songs. Supports YouTube mixes, playlists, and YouTube Music (Premium).

SongFinder - Music Recognition & Audio Tools

4.9

Identify songs playing in your browser and enhance audio with AI-powered tools

Music Player

4.9

A music player for Chrome with a floating window. Control Spotify, YouTube, SoundCloud, and other music right on your screen!