Playnite plugin
Playnite is an open source video game library manager with one simple goal: To provide a unified interface for all of your games.
This plugin allows you to import your RomM library into Playnite. It queries the RomM API to create Playnite library entires for each of your games. Installing a game in Playnite will download it from RomM and store it on your system, allowing you to launch it in your emulator of choice.
Setup
You can find the installation guide here.