It is a glass door

As the name dictates, you can see from the inside & outside.

Glassdoor.com is the new way to get an inside look at any company or job. On daily basis, real employees are sharing the ratings, reviews, and salary information for the companies and job they know best - and it's all there for us to see. This is the new website promotes the sharing of company's information including salaries.

An inside look at companies from the perspective of the employees, try the glass door website.