Facebook Developers [Social Plugins]

http://developers.facebook.com/docs/plugins/
Social plugins let you see what your friends have liked, commented on or shared on sites across the web.

---

Like Button

http://developers.facebook.com/docs/reference/plugins/like/
The Like button lets users share pages from your site back to their Facebook profile with one click.

---

Activity Feed

http://developers.facebook.com/docs/reference/plugins/activity/
The Activity Feed plugin shows users what their friends are doing on your site through likes and comments.

---

Recommendations

http://developers.facebook.com/docs/reference/plugins/recommendations/
The Recommendations plugin gives users personalized suggestions for pages on your site they might like.

---

Like Box

http://developers.facebook.com/docs/reference/plugins/like-box/
The Like Box enables users to like your Facebook Page and view its stream directly from your website.

---

Login Button

http://developers.facebook.com/docs/reference/plugins/login/
The Login Button shows profile pictures of the user's friends who have already signed up for your site in
addition to a login button.

---

Registration

http://developers.facebook.com/docs/plugins/registration/
The registration plugin allows users to easily sign up for your website with their Facebook account.

---

Facepile

http://developers.facebook.com/docs/reference/plugins/facepile/
The Facepile plugin displays the Facebook profile pictures of users who have liked your page or have signed up for your site.

---

Comments

http://developers.facebook.com/docs/reference/plugins/comments/
The Comments plugin lets users comment on any piece of content on your site.

---

Live Stream

http://developers.facebook.com/docs/reference/plugins/live-stream/
The Live Stream plugin lets your users share activity and comments in real-time as they interact during a live event.

---