MemberPress will help you build astounding WordPress membership sites, accept credit cards securely, sell online courses, control who sees your content, and sell digital downloads and more. It is a longstanding premium plugin that regularly gets great reviews. It is included in our package if you request it. See Testimonials.
Members is a simpler content access control program. It allows creation and editing of roles, and restriction of content using shortcodes based on a users role. Memberpress develops both these plugins, making Members available on the WordPress plugins site pages (where it has over 200,000 installations recorded).
Either is a great solution. We’ve chosen Members for this site because our Membership control requirements are modest.