The MainWP WordPress Manager Dashboard plugin allows you to control unlimited WordPress sites from your own private self-hosted WordPress install.
The MainWP WordPress management system is a free and open source. The system is designed for WordPress professionals who realize that WordPress management for yourself or your clients is more than just plugin and theme updates.
And, just because it is free does not mean it’s not effective. MainWP allows you to control virtually all of your daily WordPress maintenance tasks at absolutely no cost.