Wave Arts has released Tube Saturator Vintage, a free reissue of the original Tube Saturator.
Tube Saturator Vintage uses circuit simulation technology to faithfully reproduce the sound of a dual triode preamp. While it sounds great, the circuit simulation technology is very CPU intensive, that's why Wave Arts developed its successor, Tube Saturator 2, vastly more efficient, nearly identical in simulation accuracy, and with added features. However, some users prefer the sound of the original and requested it, so they've re-released it as a free plug.
Find out more and download it at wavearts.com/products/plugins/tube-saturator-vintage