Yes. Each site in the network can activate and use the plugin.
Does plugin works with WordPress MultiSite installations?
For Products GD Knowledge Base, GD Swift Navigator, GD WebFonts Toolbox, GD Clever Widgets, GD bbPress Toolbox, GD bbPress Tools, GD bbPress Attachments, GD SEO Toolbox, GD Rating System, GD Content Tools, GD Crumbs Navigator, GD Topic Prefix, GD Topic Polls, GD Power Search for bbPress, GD Quantum Theme for bbPress, GD Mail Queue, GD Members Directory for bbPress, GD Pages Navigator, GD Forum Notices for bbPressPosted on Posted on In Categories Getting Started
FAQPosted on Posted on For Products GD Knowledge Base, GD Swift Navigator, GD WebFonts Toolbox, GD Clever Widgets, GD bbPress Toolbox, GD bbPress Tools, GD bbPress Attachments, GD SEO Toolbox, GD Rating System, GD Content Tools, GD Crumbs Navigator, GD Topic Prefix, GD Topic Polls, GD Power Search for bbPress, GD Quantum Theme for bbPress, GD Mail Queue, GD Members Directory for bbPress, GD Pages Navigator, GD Forum Notices for bbPress