“signup”

This plugin can be used for making forms, newsletter signup (mailchimp) and search.

Grants administrators the ability to approve/deny memberships after signup.

Users must have an invite code to sign up for certain levels. Users are given an invite code to share.

Embed signup forms anywhere on your WordPress site. Designed to simplify membership registration, especially for free levels.

Display a progress bar for membership site signup and revenue goals.

Adds a Show for Sub-account checkbox to each MemberPress custom field so you can control which fields corporate sub-accounts see on signup and on the account page.

A plugin to manage newsletter signups and store subscriber data in a custom table.

Add spoken word audio to any blog with a single API. This open source WordPress plugin leverages aiXplain's pipeline designer to digitize blog posts into any user customizable language, and voice selection.…

The wp-signup.php file is notoriously hard to filter/customize. This plugin essentially rebuilds that file with better filters and more flexibility with modifying how it works.

Laposta plugin for Wordpress. Adds signup forms and lists out campaigns on your website.

A pluging to add signup fields to the header

Allow users to upload avatars while registering on BuddyPress sites

A plugin for the signup widget

Official SendBeam plugin for WordPress: signup forms, pop-ups, opt-ins at registration and checkout, and your site’s own email from your verified domain.

Easy-to-use login/signup WordPress plugin using mobile phone and one-time password.

Wordpress Plugin for adding the Custom Fields and build of the logic

Passwordless, mobile-first signup and login for WordPress. Users register and authenticate with their phone number and a one-time password (OTP) delivered over SMS through the BrqSMS gateway.

WordPress native double opt-in newsletter signup with automatic weekly and monthly post digests, GDPR tooling, spam protection, and theme-overridable email templates.

Use Google's Invisible reCAPTCHA to thwart bad BuddyPress signups. No admin page, view source for instructions.

you can creat a signup form with this plugin

UserAccount - as MyAccount by Woo, but only for WordPress

Create FeedBlitz newsletter signup forms using WPForms

WP plugin for BP to require admins to activate signups

Easily integrate a CleverReach Sign-Up Form in your website.

This WordPress plugin provides newsletter signup with double opt-in, spam protection, and automatic GDPR cleanup via shortcode.

This plugin handles newsletter signup specific actions on the website.