Folks
Please download and use the Blind app from App store.
Tech industry uses that, and it is completely anonymous. People discuss the kind of things we discuss over here. However, you don't have trolls who don't work in the company, just screwing around. That means you need a company email to download the app. But company HR doesn't get to know your comments etc. It is encrypted and anonymous (Folks in Amazon, Facebook, Google, and most tech companies are over there).
Most importantly, it helps in discussing compensation and career advancement opportunities. It helps the employees some bargaining power and prevents people from getting lowballed.