Kevin has authored the following WordPress Plugins:
Role Scoper: CMS-like permissions for WordPress reading and editing permissions. Content-specific restrictions and roles supplement/override WordPress roles. User groups optional. No longer actively developed; will not maintain WP compatibility beyond 3.6
Press Permit Core: Versatile and elegant content permissions engine. Customize any user, role or group with supplemental roles and exceptions. Handles custom post types. Extension plugins available for additional access control and features.
Capability Manager Enhanced: (fork of original Capability Manager) Manage WordPress role definitions. Organizes available capabilities by post type, status and source. Press Permit integration.
Revisionary: Enables qualified users to submit changes to currently published posts or pages. These changes, if approved by an Editor, can be published immediately or scheduled for future publication.