Blockchain is still doing the hype cycle but it's old news at this stage, many open source projects based on Bitcoin have separated out the blockchain to function as the security backbone and built out from it with more suitable platforms for the features they want to implement. Dash (dash.org) is one I'm involved with and that uses a second tier to handle more advanced features such as instant and anonymous transactions, greater capacity, no download needed, etc, etc. There are hundreds of similar projects working on a multitude of different advances but caution is needed, many of those projects are nothing more than get rich quick schemes looking for victims but there are plenty of gems of innovation amongst them.