HollaEx® is more than just a white-label exchange, it is an open-source crypto kit that connects your business to the blockchain world.
They offer to make your own exchange which is very cool and interesting. Using the HollaEx Exchange is easy from starting as a new user and verification is quite easy. The functions for trading/sending/receiving are great. I also like that they have a nice list of different coins that you could trade with.
Been using HollaEx for a couple of weeks now. It has been a nightmare of glitches. Currently have a sell order that is stuck and I cant cancel and in addition it subtracted twice the shares from my balance than the order was for.
The exchange has many minor flaws, but key features work well. The service is very beginner friendly and well optimized.