Cachify

Cachify is a full-page cache plugin indirectly recommended by KeyCDN authors. However, I find it somewhat opaque in its workings. It is compatible with nginx and its memcached module, as detailed in this gist by Sergej Müller, the plugin author.

It does not support APCu or PHP memcached, but reportedly, it is expected to be compatible with APCu in the year 2023.

WP-FFPC

WP-FFPC with repo at petermolnar/wp-ffpc: WordPress Plugin WP-FFPC - NOT MAINTAINED ANY MORE is abandoned in 2017.