Bitcoin XT

[Niko]

Bitcoin XT
Bitcoin XT is a fork of Bitcoin Core, the reference client for the bitcoin network. In mid-2015, the concept achieved significant attention within the bitcoin community amid a contentious debate among core developers over increasing the block size cap. [1] The current reference implementation for bitcoin contains a computational bottleneck. [2] [3] This averages to a daily maximum of around 300,000 transactions. [4]
It was proposed that the block size increase to eight megabytes, and from then onwards to automatically increase it exponentially, doubling every two years. The proposal did not gain the necessary support to go into effect on the Bitcoin network by early 2016, the earliest possible switchover date. Its use has been in steady decline from March 2016 onwards.

As of August 2017, Bitcoin XT is a Bitcoin Cash client by default. [5]

[Alcor]

I have not heard anything about bitcoin XT before. For this year, as I recall, it was planned to do just about 300 forks of bitcoin. However, about them something is hardly audible on the forums.