WordPress.org

Includes custom HTML/CSS/JS code in the section on every blog in the network.

Very simple, but sometimes useful plugin.

After activation visit Network Admin --> Settings --> Multisite wp_head Code for setup. Nothing else is needed.

Developed for private use, but has perspective for more extensive usage. I can't guarantee any support in the future nor further development, but it is to be expected. Kindly inform me about bugs, if you find any, or propose new features: zaantar@zaantar.eu.