I haven't checked these out yet, but plan to in the near future...
12 Amazing Free Plugins To Give Life To Your Mix - PSU: "Thankfully, our DAWs are already packed full of great plugins.
But sometimes it’s difficult to get the “character” we want out of them. What I mean by “character” is the way that certain pieces gear can add coloration to your tracks. For instance, if you use a vintage SSL console, you will get a certain sound due to the natural harmonics and distortion of the hardware. While it’s great that technology allows us to get a pretty much clean/un-colored sound with very little noise, sometimes it’s nice to have those extra artifacts to give life to our recordings/mixes.
Luckily, we don’t need to spend hundreds of thousands of dollars on gear."
'via Blog this'