WordPress plugin
User Role Editor Pro
Edit user roles and capabilities, and limit users to selected posts, pages or Gravity Forms.
About This Plugin
User Role Editor Pro changes the capabilities of WordPress user roles. The Pro version adds access controls and capability options beyond the free plugin.
You can restrict users to editing selected posts and pages by post or page ID, by category or taxonomy ID, or by author user ID. Access to Gravity Forms can be restricted by a list of form IDs. Custom post types can use their own capability set, such as 'edit_videos' instead of 'edit_posts', and a separate "Create" capability can be activated for posts, pages and custom post types.
Pro also lets you block admin menu items and widgets under the Appearance menu, and includes a network update for multisite.