From The Atlantic:

"Bowers didn’t make his anti-Semitic statements on Twitter or Facebook or even Reddit, but rather on a small social network called Gab. It was founded in 2016 as an alternative to Twitter and other large social platforms, and indeed looks and operates similarly to Twitter, allowing users to follow and reply to one another, and to reshare short status updates.

But while Twitter, Facebook, and other mainstream social networks abide by ever-evolving sets of community standards, Gab allows users to say pretty much anything they want. Andrew Torba, the Silicon Valley Trump supporter who created it, said that he wanted to offer an alternative to mainstream social networks, which he and others feel are biased against conservatives."

https://www.theatlantic.com/technology/archive/2018/10/what-gab/574186/