Retrom v0.7.28 is released. A centralized game library/collection management service with a focus on emulation. Configure once, play anywhere.

Retrom Features
Host your own cloud game library service
Scan your filesystem for games/platforms and automatically add them to your library
Install/uninstall and play games from the service on any amount of desktop clients.
Support for Windows, MacOS, and Linux!
Access your library from anywhere with the web client.
Manage emulator profiles on a per-client basis, stored on the server for easily sharing configurations between devices or restoring them after a reinstall.
Launch all your games across any amount of emulators or platforms via your pre-configured profiles from a single library interface.
Automatically download game metadata and artworks from supported providers to showcase your library with style!

Retrom Changelog:
Newly Added
opt-in installation of games in standalone mode
You can now configure standalone mode to require 'installing'
games as if they were hosted on a dedicated Retrom server. This
is useful in cases where you are running standalone mode but accessing
a library from a network drive. Installing in such cases ensures you
have a truly local copy of your installed games.
This also fixes a bug where in some cases standalone mode was
unconditionally requiring installation of games.

Download:Retrom v0.7.28
Source:Here