PHP – Server side scripting.

MySQL – Open-source relational database management system (RDBMS).

PDO - PHP Data Objects is a database access layer providing a uniform method of access to multiple databases.

HTML5 & CSS3 – Front end design.

Facebook – Facebook v2.8 graph API.

Twitter – Twitter login.

LinkedIn – LinkedIn login.

Google – Google login.

VK – VK login.

Tumblr – Tumblr login.

Trello – Trello login.

Youtube – Youtube login.

BitBucket – BitBucket login.

Github – Github login.

Pinterest – Pinterest login.

Instagram – Instagram login.

Dropbox – Dropbox login.