You can find official and community-verified versions of the software through major Hackintosh forums:

Trusted Mac software libraries like Mac Informer also maintain mirrors of version 1.9.1. Usage Guide

For users seeking alternatives, Mount-ESP on GitHub provides a similar open-source script-based solution.

Are you planning to use ESP Mounter Pro for configuration or for general disk maintenance ? ESP Mounter Pro v1.9 - Hackintosh Olarila

Automatically identifies internal, external, and removable drives, clearly distinguishing GPT-formatted disks containing EFI partitions.

The app uses pure code (APIs) rather than scripts, making it faster and more stable. How to Download and Install

The latest stable releases are typically hosted on InsanelyMac and Olarila.

Select the desired partition (e.g., disk0s1 ). The app will prompt for your administrator password to gain the necessary permissions.