LH Disable BP Registration is a simple plugin that delivers an alternative to disabling registration via the Dashboard>>Settings>>General page.
Registration
BuddyPress Registration Groups is a plugin that adds a list of groups to the registration form so that new members can be introduced and join your groups. It means they don’t need to go looking for them to be instantly tied in to their preferred groups. Adding this kind or form to your registration can help you to build a profile for each new member.
BP Registration Options is a simple plugin designed to do two things: It enables moderation of new BuddyPress users, and it turns a BuddyPress site into a private network.
BP Better Registration is a plugin that breaks down the BuddyPress Login process into byte-sized chunks, simplifying and extending registration to include uploading the Users Avatar photo, joining groups and adding friends.
BuddyDev Username Availability Checker is a simple plugin that checks a new registrants chosen username against those already registered and checks to see if the name has already been used, if it has been used then a warning is displayed telling the registrant to choose a different username before they complete the registration process and therefore improving the workflow for new member registrations.
BP Restricted Signup by Email Domain is a plugin that allows a site administrator to set domain whitelists for user signups. This means that if you only want to allow members with a gmail.com address you can, or more likely, people with a .edu mail account
Buddy Registration Widget is an unusual plugin in that it is very mission specific, it will add a widget that displays the BuddyPress registration page, it disables the BuddyPress member profile cover image site wide and it won’t allow new members to access the site until they have set uploaded a profile avatar image. There are no settings to change, once uploaded these options are set and that’s it. So if your site has these specific requirements then this plugin is for you, but if you want registration in a sidebar widget but also want profile cover images then this plugin is not an option!
BuddyPress Simple Terms and Conditions is a simple plugin that allows you to add a tick box to the registration page that forces any would be new member to agree to your sites Terms of Service.
BP Auto Group Join is a plugin which allows site admin to configure groups which all existing site members and/or all new registrations will be automatically joined to. The plugin creates in the Dashboard>>Groups>>GroupName view additional options: to auto-join all new registrants, and to auto-join all existing members.