Easy Web Performance Optimization (WPO) using caching: browser, page, object, database, minify and content delivery network support.
This is the first extension installed on every WordPress site we do!
W3 Total Cache is a great and useful plug which has improved over time. I highly recommend it.
but too many nags
Good plugin that does what it says on the tin.
The only annoyance is the pop-up that appears every time you save or go to another settings page. I happily accept adverts and donation requests on free plugins, but don't want to be beaten over the head with them. Would've given 5 stars if not for that.
This plugin has made a huge difference in the performance of my site...
Works very good.
It is a complex plugin, but all the abilities included in it simply require some work to explore and use properly. Don't let that scare you away. It is well worth the effort and works well with all the default settings even if you don't feeling like learning to tune for your specific install.