All Linked duplicates

Blender Development Fund
Asset Library
Blender Development Fund
Asset Library
Modifier to Instances - ModiTo
$1.99

Fr4ncisco in Addons

Merger - Your Tool for Simplifying Complex Blender Scenes
$12 Dev Fund Contributor

Andrew Luzhetskyi in Addons

Link Tools
$10 Dev Fund Contributor

Lightbluespaces in Addons

Object Relations Pie Menu
$4.99 Dev Fund Contributor

Ad Morris's Add-ons in Addons

Multiple Single Users
$10

Yves in Addons