Admium lets users sign up for recurring subscriptions to your WordPress site, and lets you make subscriber-only content.
2.2.1 Bugfix to subscribe link shortcode functionality
2.2.0 Plugin options now removed on uninstall
2.0.0 Brought versioning in line with back-end. Major graphical redesign of subscribe popup. Removed unnecessary CSS.
0.14.0 Added Admium menu item to the WordPress admin page side menu
0.13.0 Added support to toggle viewing a site as a subscriber or non-subscriber via the floating top admin menu bar