You can see the full list of (larger) improvements since the Oracle ZFS&#x2F;OpenZFS split here: <a href="http:&#x2F;&#x2F;open-zfs.org&#x2F;wiki&#x2F;Features" rel="nofollow">http:&#x2F;&#x2F;open-zfs.org&#x2F;wiki&#x2F;Features</a><p>But basically tons of improvements to the L2ARC and volume management (async destroy is a god send for example).<p>Lack of encryption and no clustering support is a bit of a bummer but both are easily worked around, the performance improvements in the OpenZFS branch however are very dramatic and well worth running it over the Oracle branch where possible.<p>There is also all the inflight stuff here on the main page: <a href="http:&#x2F;&#x2F;open-zfs.org&#x2F;wiki&#x2F;Main_Page" rel="nofollow">http:&#x2F;&#x2F;open-zfs.org&#x2F;wiki&#x2F;Main_Page</a>