Ripple, a token created by the company of the same name that aims to facilitate transfers between major financial corporations. In this objective, it has been very successful in 2017 with the collaboration of some important banks.
In spite of working with the central banks, it is the centralized nature that has many in a state of war. When the system was created in 2013, the development team eliminated many of the key functions found in most other cryptocurrencies.
This was done so that the token could be oriented towards these main financial institutions, which is good and probably necessary, but it becomes problematic when considering Ripple in the same boat as Bitcoin and other highly decentralized digital currencies.