This is a certificate which is installed on a secure server. An SSL certificate or secure certificate, is a file installed on a secure Web server that identifies a website.This digital certificate establishes the identity and authenticity of the company or merchant so that online shoppers can trust that the website is secure and reliable. In order to verify that these sites are legitimate (they are who they say they are), the companies and their websites are verified by a third party, such as Verisign or Thawte.

Here are the listed of following companies who provides SSL Certificate :