carman23

You or your members enter a birthdate in WordPress or BuddyPress. This plugin automatically sends an email to such members on their birthday.
You can customize the email that is sent to all Users.
You can request a notification email be sent to you for each birthday email that gets sent, so you know it happened and when.
If you want to contact the author, write to clawrick@gmail.com
Birthday Emails is currently available in English only, though you can customize the birthday email sent, in any language you wish.

Birthday Emails

Automatically send an email to WordPress or BuddyPress users on their birthday.

angelorum

Creates a widget to display user’s birthdays of today, and next and past birthdays. Responsive and customizable.
Features: 
– This plugin adds a field in users profile for the user can enter his birthday date, from a calendar jquery popup. 
– Creates a widget to be added to the site. This widget displays to the users who are in birthday today. 
– The widget also allows display the next users who will be in birthday, and the past users too. You can choose the amount of users birthday to be shown. 
– Widget customizable: amount of past and next birthdays to show, show or hide users avatars.. 
– Exports user birthdays to iCal format. 
– Translations: english and spanish.
<h3>Useful links</h3>
<ul>
<li>Oficial website: http://codificando.cl/web/?page_id=92</li>
<li>Developer’s email: jason.matamala@gmail.com</li>
</ul>

Jason Birthday Widget

Good

Creates a widget to displays user's birthdays of today, and next and past birthdays. Exports user birthdays to iCal format. Customizable.

Birthday Emails vs Jason Birthday Widget