Bminer is a relatively new miner for Nvidia GPUs for mining cryptocurrencies using the Equihash algorithm such as Zcash (ZEC). It is a closed source miner, available for both Windows and Linux operating systems and comes with a 2% dev fee included (optional, though disabling it apparently removes some optimizations). Bminer comes as an alternative to the popular EWBF miner, the development of which has been stalled for a while already, as well as the more recent dstm ZCash CUDA Miner that looks promising and is actively being developed, but still lacks some features such as failover pool support for example. So any new alternatives such as Bminer that are being actively improved and developed are more than welcome for the users and the crypto community as well.
According to its developers and most users that have tried the Bminer already it is the fastest publicly available Equihash miner for Nvidia GPUs and we can confirm that our initial impressions are showing a better local hashrate compared to the alternatives mentioned. So if you have a Compute Capability 5.0 or newer Nvidia GPU used for mining you might want to give Bminer a go and see if it will work better for you. The miner does come with SSL support as well as Nicehash support, has some interesting extra features, though it is still very easy to use. There is also an API and a web-based interface available for monitoring of your mining rigs that can be quite useful, so go and give it a try and report your results.