Glassdoor gives you exactly that.
If you are looking for a job, do not miss out on this great tool to learn about: job opportunities, salaries, interview processes, employees feedbacks. This is the tripadvisor of jobs.
In times of change and increasing amount of information to go through it is hard to find what you need and to make sure you do not miss any option because you did not know.
Let’s give a huge « thank you » to the founders
http://www.glassdoor.com/