Adam Harley (Kawauso)

A quick adaptation of the theme restriction code for widgets. Can only restrict on a site-wide basis, though it will only affect those sites on which it’s activated. Does not restrict super admins. Plugins must be active on the main site to be controlled by this plugin (this is an issue with WordPress’ plugin structure).
See also: <a href="https://wordpress.org/extend/plugins/restrict-multisite-plugins/" rel="ugc">Restrict Multisite Plugins</a>

Restrict Multisite Widgets

Allows network admins to restrict which widgets are available on sites, similar to themes.

A quick adaptation of the theme restriction code for plugins. Can only restrict on a site-wide basis, though it will only affect those sites on which it’s activated. Does not restrict super admins. Plugins must be active on the main site to be controlled by this plugin (this is an issue with WordPress’ plugin structure).
See also: <a href="https://wordpress.org/extend/plugins/restrict-multisite-widgets/" rel="ugc">Restrict Multisite Widgets</a>

Restrict Multisite Plugins

Allows network admins to restrict which plugins are available on sites, similar to themes.

Restrict Multisite Widgets vs Restrict Multisite Plugins