Open Source MDM
Device management is one of the most invasive things you can install - it can push policy, read inventory, and wipe a phone remotely, which means the agent on every device has near-total authority over it. The open source platforms here let you see exactly what that agent can do and run the management server yourself, so the power to enroll, configure, and erase your fleet stays inside your own infrastructure rather than a vendor's.

Fleet
Open MDM platform for managing, updating, and securing devices across every OS

MicroMDM
Mobile Device Management server for Apple devices with an API-first workflow

NanoMDM
Minimal Apple MDM server and library with MySQL and PostgreSQL backends

Headwind MDM
Open source mobile device management for Android with QR enrollment and web-based app deployment