[pjbrunet]

8 million caching plugins is a total exaggeration. As far as I can tell there's only two options: WP Super Cache (which seems to have been abandoned by the author) and W3 Total Cache which is a spammy mess of nag screens to join New Relic and MaxCDN. (No wonder it was banned by WP-Engine.) If I wasn't busy on other projects, I would take on W3 Total Cache--it's the worst UI I have ever seen and it doesn't even work. I had to mostly disable it today because my CPU went from 100% to 600% after installing it.

[gibrown]

FYI, WP Super Cache is not really abandoned. The plugin author works for Automattic (as do I). I would say more that it has been so popular that support has been hard to keep up with and there hasn't been much focus on new features recently. Patches are always welcome: https://github.com/Automattic/wp-super-cache/

[juliangregorian]

Seeing a lot more than two: https://wordpress.org/plugins/tags/cache